{"id":6255,"date":"2026-02-04T09:13:31","date_gmt":"2026-02-04T01:13:31","guid":{"rendered":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/"},"modified":"2026-02-04T09:13:31","modified_gmt":"2026-02-04T01:13:31","slug":"case-study-streamlining-the-food-ordering-system-with-dfd","status":"publish","type":"post","link":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/","title":{"rendered":"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD"},"content":{"rendered":"<h3 class=\"text-md-strong pb-1 [&amp;:not(:first-child)]:pt-3.5\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 g\u00ec?<\/h3>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh d\u00f9ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 cho th\u1ea5y c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c ngu\u1ed3n, \u0111\u00edch v\u00e0 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. V\u1ec1 c\u01a1 b\u1ea3n, n\u00f3 m\u00f4 t\u1ea3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh trong h\u1ec7 th\u1ed1ng.<\/span><\/p>\n<h3 class=\"text-md-strong pb-1 [&amp;:not(:first-child)]:pt-3.5\">T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng DFD?<\/h3>\n<ol class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-5 marker:normal-nums marker:text-sm-strong\" start=\"1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>R\u00f5 r\u00e0ng v\u00e0 d\u1ec5 hi\u1ec3u<\/strong>: DFD gi\u00fap c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u c\u00e1ch h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n r\u00f5 r\u00e0ng v\u00e0 tr\u1ef1c quan v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m b\u1ea5t hi\u1ec7u qu\u1ea3<\/strong>: B\u1eb1ng c\u00e1ch bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m ngh\u1ebdn, s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 trong quy tr\u00ecnh c\u1ee7a m\u00ecnh.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>C\u1ea3i thi\u1ec7n giao ti\u1ebfp<\/strong>: DFD \u0111\u00f3ng vai tr\u00f2 l\u00e0 ng\u00f4n ng\u1eef chung cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, nh\u00e0 ph\u00e2n t\u00edch v\u00e0 c\u00e1c b\u00ean li\u00ean quan, gi\u00fap c\u1ea3i thi\u1ec7n giao ti\u1ebfp v\u00e0 h\u1ee3p t\u00e1c.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng<\/strong>: DFD l\u00e0 c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c kh\u00eda c\u1ea1nh di chuy\u1ec3n d\u1eef li\u1ec7u \u0111\u1ec1u \u0111\u01b0\u1ee3c xem x\u00e9t.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>T\u00e0i li\u1ec7u<\/strong>: Ch\u00fang cung c\u1ea5p t\u00e0i li\u1ec7u qu\u00fd gi\u00e1 cho h\u1ec7 th\u1ed1ng, h\u1eefu \u00edch cho vi\u1ec7c tham kh\u1ea3o v\u00e0 b\u1ea3o tr\u00ec trong t\u01b0\u01a1ng lai.<\/span><\/p>\n<\/li>\n<\/ol>\n<h3 class=\"text-md-strong pb-1 [&amp;:not(:first-child)]:pt-3.5\">L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o m\u1ed9t DFD<\/h3>\n<ol class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-5 marker:normal-nums marker:text-sm-strong\" start=\"1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh<\/strong>: X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh ch\u00ednh trong h\u1ec7 th\u1ed1ng. M\u1ed7i qu\u00e1 tr\u00ecnh s\u1ebd c\u00f3 m\u1ed9t ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng ho\u1eb7c t\u1ea1o b\u00e1o c\u00e1o.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i<\/strong>: X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u00e1ch h\u00e0ng, nh\u00e0 cung c\u1ea5p ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>X\u00e1c \u0111\u1ecbnh kho d\u1eef li\u1ec7u<\/strong>: X\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1ec7p tin ho\u1eb7c b\u1ea5t k\u1ef3 lo\u1ea1i kho d\u1eef li\u1ec7u n\u00e0o kh\u00e1c.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u<\/strong>: X\u00e1c \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. S\u1eed d\u1ee5ng m\u0169i t\u00ean \u0111\u1ec3 bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>T\u1ea1o s\u01a1 \u0111\u1ed3<\/strong>: S\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n c\u1ee7a DFD \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3. C\u00e1c qu\u00e1 tr\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt, lu\u1ed3ng d\u1eef li\u1ec7u b\u1eb1ng m\u0169i t\u00ean, kho d\u1eef li\u1ec7u b\u1eb1ng h\u00ecnh ch\u1eef nh\u1eadt h\u1edf, v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i b\u1eb1ng h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh elip.<\/span><\/p>\n<\/li>\n<\/ol>\n<h3 class=\"text-md-strong pb-1 [&amp;:not(:first-child)]:pt-3.5\">C\u00e1c k\u00fd hi\u1ec7u v\u00ed d\u1ee5<\/h3>\n<ul class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-4 px-1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Qu\u00e1 tr\u00ecnh<\/strong>: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt bo g\u00f3c.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Lu\u1ed3ng d\u1eef li\u1ec7u<\/strong>: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u0169i t\u00ean.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>C\u1eeda h\u00e0ng d\u1eef li\u1ec7u<\/strong>: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt kh\u00f4ng kh\u00e9p k\u00edn.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Entiti b\u00ean ngo\u00e0i<\/strong>: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh elip.<\/span><\/p>\n<\/li>\n<\/ul>\n<h3 class=\"text-md-strong pb-1 [&amp;:not(:first-child)]:pt-3.5\">C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 v\u1ebd s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/h3>\n<ol class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-5 marker:normal-nums marker:text-sm-strong\" start=\"1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>B\u1eaft \u0111\u1ea7u b\u1eb1ng s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh<\/strong>: B\u1eaft \u0111\u1ea7u t\u1eeb c\u1ea5p \u0111\u1ed9 cao nh\u1ea5t (s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 0) th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c entiti b\u00ean ngo\u00e0i.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Ph\u00e2n t\u00edch th\u00e0nh c\u00e1c c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n<\/strong>: Chia nh\u1ecf h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 DFD chi ti\u1ebft h\u01a1n (c\u1ea5p 1, c\u1ea5p 2, v.v.) \u0111\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Ghi nh\u00e3n r\u00f5 r\u00e0ng t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n<\/strong>: \u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c qu\u00e1 tr\u00ecnh, lu\u1ed3ng d\u1eef li\u1ec7u, c\u1eeda h\u00e0ng d\u1eef li\u1ec7u v\u00e0 c\u00e1c entiti b\u00ean ngo\u00e0i \u0111\u1ec1u \u0111\u01b0\u1ee3c ghi nh\u00e3n r\u00f5 r\u00e0ng.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>X\u00e1c minh v\u1edbi c\u00e1c b\u00ean li\u00ean quan<\/strong>: Xem x\u00e9t s\u01a1 \u0111\u1ed3 DFD c\u00f9ng v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 \u0111\u1ea7y \u0111\u1ee7.<\/span><\/p>\n<\/li>\n<\/ol>\n<h2>Case study v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u<\/h2>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 l\u00e0 y\u1ebfu t\u1ed1 thay \u0111\u1ed5i cu\u1ed9c ch\u01a1i trong vi\u1ec7c hi\u1ec3u v\u00e0 t\u1ed1i \u01b0u h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. H\u00e3y b\u1eaft \u0111\u1ea7u ngay v\u00e0 b\u1eaft \u0111\u1ea7u v\u1ebd b\u1ea3n \u0111\u1ed3!<\/span><\/p>\n<h4 class=\"text-base-strong\">B\u1ed1i c\u1ea3nh<\/h4>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) v\u00e0 c\u00e1ch n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n \u0103n. Case study n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c n\u00e2ng cao hi\u1ec7u qu\u1ea3 quy tr\u00ecnh \u0111\u1eb7t m\u00f3n c\u1ee7a m\u1ed9t nh\u00e0 h\u00e0ng b\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng.<\/span><\/p>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">CityBite, m\u1ed9t nh\u00e0 h\u00e0ng th\u00e0nh th\u1ecb n\u1ed5i ti\u1ebfng, \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c trong vi\u1ec7c qu\u1ea3n l\u00fd \u0111\u01a1n h\u00e0ng, h\u00e0ng t\u1ed3n kho v\u00e0 b\u00e1o c\u00e1o. \u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5, h\u1ecd quy\u1ebft \u0111\u1ecbnh ph\u00e2n t\u00edch v\u00e0 t\u00e1i thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD).<\/span><\/p>\n<p aria-atomic=\"true\" aria-live=\"polite\"><img alt=\"Chapter 8. Data Flow Diagram - Visual Paradigm Community Circle\" decoding=\"async\" src=\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2024\/10\/img_6704e2638dd43.png\"\/><\/p>\n<h4 class=\"text-base-strong\">M\u1ee5c ti\u00eau<\/h4>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">M\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c entiti kh\u00e1c nhau, c\u00e1c qu\u00e1 tr\u00ecnh v\u00e0 c\u00e1c c\u1eeda h\u00e0ng d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. Vi\u1ec7c tr\u1ef1c quan h\u00f3a n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ngh\u1ebdn v\u00e0 c\u00e1c khu v\u1ef1c c\u1ea7n c\u1ea3i thi\u1ec7n.<\/span><\/p>\n<h4 class=\"text-base-strong\">T\u1ed5ng quan h\u1ec7 th\u1ed1ng<\/h4>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">H\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n c\u1ee7a CityBite bao g\u1ed3m c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa kh\u00e1ch h\u00e0ng, nh\u00e0 b\u1ebfp, nh\u00e0 cung c\u1ea5p v\u00e0 ban qu\u1ea3n l\u00fd nh\u00e0 h\u00e0ng. S\u01a1 \u0111\u1ed3 DFD ghi l\u1ea1i c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y, cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u.<\/span><\/p>\n<h4 class=\"text-base-strong\">C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 DFD<\/h4>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>1. C\u00e1c entiti b\u00ean ngo\u00e0i:<\/strong><\/span><\/p>\n<ul class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-4 px-1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Kh\u00e1ch h\u00e0ng<\/strong>: \u0110\u1eb7t m\u1ed9t \u0111\u01a1n h\u00e0ng v\u00e0 nh\u1eadn h\u00f3a \u0111\u01a1n.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Nh\u00e0 cung c\u1ea5p<\/strong>: Nh\u1eadn c\u00e1c \u0111\u01a1n \u0111\u1eb7t h\u00e0ng h\u00e0ng t\u1ed3n kho t\u1eeb h\u1ec7 th\u1ed1ng nh\u00e0 h\u00e0ng.<\/span><\/p>\n<\/li>\n<\/ul>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>2. C\u00e1c qu\u00e1 tr\u00ecnh:<\/strong><\/span><\/p>\n<ul class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-4 px-1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>\u0110\u1eb7t m\u00f3n \u0103n (0.1)<\/strong>: X\u1eed l\u00fd \u0111\u01a1n h\u00e0ng c\u1ee7a kh\u00e1ch h\u00e0ng v\u00e0 g\u1eedi n\u00f3 \u0111\u1ebfn nh\u00e0 b\u1ebfp. N\u00f3 c\u0169ng t\u1ea1o h\u00f3a \u0111\u01a1n cho kh\u00e1ch h\u00e0ng.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>T\u1ea1o B\u00e1o c\u00e1o (0.2)<\/strong>: T\u1ea1o b\u00e1o c\u00e1o d\u1ef1a tr\u00ean chi ti\u1ebft t\u1ed3n kho v\u00e0 g\u1eedi ch\u00fang \u0111\u1ebfn qu\u1ea3n l\u00fd.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>\u0110\u1eb7t h\u00e0ng t\u1ed3n kho (0.3)<\/strong>: \u0110\u1eb7t \u0111\u01a1n h\u00e0ng t\u1ed3n kho cho nh\u00e0 cung c\u1ea5p d\u1ef1a tr\u00ean chi ti\u1ebft t\u1ed3n kho.<\/span><\/p>\n<\/li>\n<\/ul>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>3. Kho d\u1eef li\u1ec7u:<\/strong><\/span><\/p>\n<ul class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-4 px-1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>T\u1ed3n kho<\/strong>: L\u01b0u tr\u1eef chi ti\u1ebft t\u1ed3n kho \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng b\u1edfi c\u00e1c quy tr\u00ecnh kh\u00e1c nhau.<\/span><\/p>\n<\/li>\n<\/ul>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>4. Lu\u1ed3ng d\u1eef li\u1ec7u:<\/strong><\/span><\/p>\n<ul class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-4 px-1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>\u0110\u01a1n h\u00e0ng<\/strong>: \u0110\u01b0\u1ee3c g\u1eedi t\u1eeb kh\u00e1ch h\u00e0ng \u0111\u1ebfn quy tr\u00ecnh \u201c\u0110\u1eb7t m\u00f3n\u201d.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>H\u00f3a \u0111\u01a1n<\/strong>: \u0110\u01b0\u1ee3c g\u1eedi t\u1eeb quy tr\u00ecnh \u201c\u0110\u1eb7t m\u00f3n\u201d \u0111\u1ebfn kh\u00e1ch h\u00e0ng.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>\u0110\u01a1n h\u00e0ng<\/strong>: \u0110\u01b0\u1ee3c g\u1eedi t\u1eeb quy tr\u00ecnh \u201c\u0110\u1eb7t m\u00f3n\u201d \u0111\u1ebfn nh\u00e0 b\u1ebfp.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Chi ti\u1ebft t\u1ed3n kho<\/strong>: \u0110\u01b0\u1ee3c g\u1eedi t\u1eeb quy tr\u00ecnh \u201c\u0110\u1eb7t m\u00f3n\u201d \u0111\u1ebfn kho d\u1eef li\u1ec7u \u201cT\u1ed3n kho\u201d.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Chi ti\u1ebft t\u1ed3n kho<\/strong>: \u0110\u01b0\u1ee3c g\u1eedi t\u1eeb kho d\u1eef li\u1ec7u \u201cT\u1ed3n kho\u201d \u0111\u1ebfn quy tr\u00ecnh \u201cT\u1ea1o B\u00e1o c\u00e1o\u201d.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>B\u00e1o c\u00e1o<\/strong>: \u0110\u01b0\u1ee3c g\u1eedi t\u1eeb quy tr\u00ecnh \u201cT\u1ea1o B\u00e1o c\u00e1o\u201d \u0111\u1ebfn qu\u1ea3n l\u00fd.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Chi ti\u1ebft t\u1ed3n kho<\/strong>: \u0110\u01b0\u1ee3c g\u1eedi t\u1eeb kho d\u1eef li\u1ec7u \u201cT\u1ed3n kho\u201d \u0111\u1ebfn quy tr\u00ecnh \u201c\u0110\u1eb7t h\u00e0ng t\u1ed3n kho\u201d.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>\u0110\u01a1n h\u00e0ng t\u1ed3n kho<\/strong>: \u0110\u01b0\u1ee3c g\u1eedi t\u1eeb quy tr\u00ecnh \u201c\u0110\u1eb7t h\u00e0ng t\u1ed3n kho\u201d \u0111\u1ebfn nh\u00e0 cung c\u1ea5p.<\/span><\/p>\n<\/li>\n<\/ul>\n<h4 class=\"text-base-strong\">M\u00f4 t\u1ea3 ng\u1eafn g\u1ecdn v\u1ec1 h\u00ecnh \u1ea3nh<\/h4>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">H\u00ecnh \u1ea3nh l\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) cho h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n \u0103n t\u1ea1i CityBite. N\u00f3 m\u00f4 t\u1ea3 tr\u1ef1c quan c\u00e1ch d\u1eef li\u1ec7u l\u01b0u chuy\u1ec3n gi\u1eefa c\u00e1c th\u1ef1c th\u1ec3, quy tr\u00ecnh v\u00e0 kho d\u1eef li\u1ec7u kh\u00e1c nhau:<\/span><\/p>\n<ul class=\"relative list-outside marker:text-foreground-750 dark:marker:text-foreground-600 flex flex-col ms-4 px-1\">\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Kh\u00e1ch h\u00e0ng<\/strong> \u0111\u1eb7t \u0111\u01a1n h\u00e0ng, \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1edfi<strong>\u0110\u1eb7t m\u00f3n<\/strong>\u00a0quy tr\u00ecnh. Quy tr\u00ecnh n\u00e0y giao ti\u1ebfp v\u1edbi nh\u00e0 b\u1ebfp v\u00e0 t\u1ea1o h\u00f3a \u0111\u01a1n cho kh\u00e1ch h\u00e0ng.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>Chi ti\u1ebft t\u1ed3n kho<\/strong>\u00a0\u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt v\u00e0 l\u01b0u tr\u1eef, h\u1ed7 tr\u1ee3 qu\u1ea3n l\u00fd t\u1ed3n kho.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">Quy tr\u00ecnh<strong>T\u1ea1o b\u00e1o c\u00e1o<\/strong>\u00a0quy tr\u00ecnh s\u1eed d\u1ee5ng c\u00e1c chi ti\u1ebft n\u00e0y \u0111\u1ec3 t\u1ea1o b\u00e1o c\u00e1o cho ban qu\u1ea3n l\u00fd, h\u1ed7 tr\u1ee3 ra quy\u1ebft \u0111\u1ecbnh.<\/span><\/p>\n<\/li>\n<li class=\"ps-2\">\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\"><strong>\u0110\u01a1n \u0111\u1eb7t h\u00e0ng t\u1ed3n kho<\/strong>\u00a0\u0111\u01b0\u1ee3c \u0111\u1eb7t v\u1edbi nh\u00e0 cung c\u1ea5p \u0111\u1ec3 b\u1ed5 sung h\u00e0ng t\u1ed3n, \u0111\u1ea3m b\u1ea3o ho\u1ea1t \u0111\u1ed9ng tr\u01a1n tru.<\/span><\/p>\n<\/li>\n<\/ul>\n<h4 class=\"text-base-strong\">K\u1ebft qu\u1ea3 tri\u1ec3n khai<\/h4>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD), CityBite \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u0111\u01b0\u1ee3c nh\u1eefng b\u1ea5t c\u1eadp trong h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m c\u1ee7a h\u1ecd. B\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u, h\u1ecd \u0111\u00e3 t\u1ed1i \u01b0u h\u00f3a ho\u1ea1t \u0111\u1ed9ng, gi\u1ea3m th\u1eddi gian x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng v\u00e0 c\u1ea3i thi\u1ec7n qu\u1ea3n l\u00fd t\u1ed3n kho, d\u1eabn \u0111\u1ebfn d\u1ecbch v\u1ee5 kh\u00e1ch h\u00e0ng t\u1ed1t h\u01a1n v\u00e0 hi\u1ec7u qu\u1ea3 ho\u1ea1t \u0111\u1ed9ng cao h\u01a1n.<\/span><\/p>\n<h4 class=\"text-base-strong\">K\u1ebft lu\u1eadn<\/h4>\n<p aria-atomic=\"true\" aria-live=\"polite\"><span class=\"\">Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p n\u00e0y nh\u1ea5n m\u1ea1nh t\u1ea7m quan tr\u1ecdng c\u1ee7a vi\u1ec7c s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u \u0111\u1ec3 tr\u1ef1c quan h\u00f3a v\u00e0 ph\u00e2n t\u00edch lu\u1ed3ng d\u1eef li\u1ec7u trong m\u1ed9t h\u1ec7 th\u1ed1ng. \u0110\u1ed1i v\u1edbi CityBite, DFD \u0111\u00e3 cung c\u1ea5p nh\u1eefng th\u00f4ng tin qu\u00fd gi\u00e1 d\u1eabn \u0111\u1ebfn nh\u1eefng c\u1ea3i ti\u1ebfn \u0111\u00e1ng k\u1ec3 trong quy tr\u00ecnh \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m c\u1ee7a h\u1ecd. H\u00e3y \u00e1p d\u1ee5ng k\u1ef9 thu\u1eadt n\u00e0y \u0111\u1ec3 n\u00e2ng cao n\u1ed7 l\u1ef1c ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. ?<\/span><\/p>\n<h2>T\u00e0i li\u1ec7u tham kh\u1ea3o<\/h2>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/what-is-data-flow-diagram\/\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 g\u00ec?<\/a><\/p>\n<p><a href=\"https:\/\/www.visual-paradigm.com\/guide\/data-flow-diagram\/logical-vs-physical-data-flow-diagrams\/\">S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u logic so v\u1edbi s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u v\u1eadt l\u00fd<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 g\u00ec? S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh d\u00f9ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 cho th\u1ea5y c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c ngu\u1ed3n, \u0111\u00edch v\u00e0 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. V\u1ec1 c\u01a1 b\u1ea3n, n\u00f3 m\u00f4 t\u1ea3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh trong h\u1ec7 th\u1ed1ng. T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng DFD? R\u00f5 r\u00e0ng v\u00e0 d\u1ec5 hi\u1ec3u: DFD gi\u00fap c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u c\u00e1ch h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n r\u00f5 r\u00e0ng v\u00e0 tr\u1ef1c quan v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u. Ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m b\u1ea5t hi\u1ec7u qu\u1ea3: B\u1eb1ng c\u00e1ch bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m ngh\u1ebdn, s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 trong quy tr\u00ecnh c\u1ee7a m\u00ecnh. C\u1ea3i thi\u1ec7n giao ti\u1ebfp: DFD \u0111\u00f3ng vai tr\u00f2 l\u00e0 ng\u00f4n ng\u1eef chung cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, nh\u00e0 ph\u00e2n t\u00edch v\u00e0 c\u00e1c b\u00ean li\u00ean quan, gi\u00fap c\u1ea3i thi\u1ec7n giao ti\u1ebfp v\u00e0 h\u1ee3p t\u00e1c. Ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: DFD l\u00e0 c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c kh\u00eda c\u1ea1nh di chuy\u1ec3n d\u1eef li\u1ec7u \u0111\u1ec1u \u0111\u01b0\u1ee3c xem x\u00e9t. T\u00e0i li\u1ec7u: Ch\u00fang cung c\u1ea5p t\u00e0i li\u1ec7u qu\u00fd gi\u00e1 cho h\u1ec7 th\u1ed1ng, h\u1eefu \u00edch cho vi\u1ec7c tham kh\u1ea3o v\u00e0 b\u1ea3o tr\u00ec trong t\u01b0\u01a1ng lai. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o m\u1ed9t DFD X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh: X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh ch\u00ednh trong h\u1ec7 th\u1ed1ng. M\u1ed7i qu\u00e1 tr\u00ecnh s\u1ebd c\u00f3 m\u1ed9t ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng ho\u1eb7c t\u1ea1o b\u00e1o c\u00e1o. X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u00e1ch h\u00e0ng, nh\u00e0 cung c\u1ea5p ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c. X\u00e1c \u0111\u1ecbnh kho d\u1eef li\u1ec7u: X\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1ec7p tin ho\u1eb7c b\u1ea5t k\u1ef3 lo\u1ea1i kho d\u1eef li\u1ec7u n\u00e0o kh\u00e1c. Bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u: X\u00e1c \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. S\u1eed d\u1ee5ng m\u0169i t\u00ean \u0111\u1ec3 bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u. T\u1ea1o s\u01a1 \u0111\u1ed3: S\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n c\u1ee7a DFD \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3. C\u00e1c qu\u00e1 tr\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt, lu\u1ed3ng d\u1eef li\u1ec7u b\u1eb1ng m\u0169i t\u00ean, kho d\u1eef li\u1ec7u b\u1eb1ng h\u00ecnh ch\u1eef nh\u1eadt h\u1edf, v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i b\u1eb1ng h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh elip. C\u00e1c k\u00fd hi\u1ec7u v\u00ed d\u1ee5 Qu\u00e1 tr\u00ecnh: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt bo g\u00f3c. Lu\u1ed3ng d\u1eef li\u1ec7u: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u0169i t\u00ean. C\u1eeda h\u00e0ng d\u1eef li\u1ec7u: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt kh\u00f4ng kh\u00e9p k\u00edn. Entiti b\u00ean ngo\u00e0i: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh elip. C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 v\u1ebd s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u B\u1eaft \u0111\u1ea7u b\u1eb1ng s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh: B\u1eaft \u0111\u1ea7u t\u1eeb c\u1ea5p \u0111\u1ed9 cao nh\u1ea5t (s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 0) th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c entiti b\u00ean ngo\u00e0i. Ph\u00e2n t\u00edch th\u00e0nh c\u00e1c c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n: Chia nh\u1ecf h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 DFD chi ti\u1ebft h\u01a1n (c\u1ea5p 1, c\u1ea5p 2, v.v.) \u0111\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u. Ghi nh\u00e3n r\u00f5 r\u00e0ng t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n: \u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c qu\u00e1 tr\u00ecnh, lu\u1ed3ng d\u1eef li\u1ec7u, c\u1eeda h\u00e0ng d\u1eef li\u1ec7u v\u00e0 c\u00e1c entiti b\u00ean ngo\u00e0i \u0111\u1ec1u \u0111\u01b0\u1ee3c ghi nh\u00e3n r\u00f5 r\u00e0ng. X\u00e1c minh v\u1edbi c\u00e1c b\u00ean li\u00ean quan: Xem x\u00e9t s\u01a1 \u0111\u1ed3 DFD c\u00f9ng v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 \u0111\u1ea7y \u0111\u1ee7. Case study v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 l\u00e0 y\u1ebfu t\u1ed1 thay \u0111\u1ed5i cu\u1ed9c ch\u01a1i trong vi\u1ec7c hi\u1ec3u v\u00e0 t\u1ed1i \u01b0u h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. H\u00e3y b\u1eaft \u0111\u1ea7u ngay v\u00e0 b\u1eaft \u0111\u1ea7u v\u1ebd b\u1ea3n \u0111\u1ed3! B\u1ed1i c\u1ea3nh Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) v\u00e0 c\u00e1ch n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n \u0103n. Case study n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c n\u00e2ng cao hi\u1ec7u qu\u1ea3 quy tr\u00ecnh \u0111\u1eb7t m\u00f3n c\u1ee7a m\u1ed9t nh\u00e0 h\u00e0ng b\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. CityBite, m\u1ed9t nh\u00e0 h\u00e0ng th\u00e0nh th\u1ecb n\u1ed5i ti\u1ebfng, \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c trong vi\u1ec7c qu\u1ea3n l\u00fd \u0111\u01a1n h\u00e0ng, h\u00e0ng t\u1ed3n kho v\u00e0 b\u00e1o c\u00e1o. \u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5, h\u1ecd quy\u1ebft \u0111\u1ecbnh ph\u00e2n t\u00edch v\u00e0 t\u00e1i thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD). M\u1ee5c ti\u00eau M\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c entiti kh\u00e1c nhau, c\u00e1c qu\u00e1 tr\u00ecnh v\u00e0 c\u00e1c c\u1eeda h\u00e0ng d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. Vi\u1ec7c tr\u1ef1c quan h\u00f3a n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ngh\u1ebdn v\u00e0 c\u00e1c khu v\u1ef1c c\u1ea7n c\u1ea3i thi\u1ec7n. T\u1ed5ng quan h\u1ec7 th\u1ed1ng H\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n c\u1ee7a CityBite bao g\u1ed3m c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa kh\u00e1ch h\u00e0ng, nh\u00e0 b\u1ebfp, nh\u00e0 cung c\u1ea5p v\u00e0 ban qu\u1ea3n l\u00fd nh\u00e0 h\u00e0ng. S\u01a1 \u0111\u1ed3 DFD ghi l\u1ea1i c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y, cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u. C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 DFD 1. C\u00e1c entiti b\u00ean ngo\u00e0i: Kh\u00e1ch h\u00e0ng: \u0110\u1eb7t m\u1ed9t \u0111\u01a1n h\u00e0ng v\u00e0 nh\u1eadn h\u00f3a \u0111\u01a1n. Nh\u00e0 cung c\u1ea5p: Nh\u1eadn c\u00e1c \u0111\u01a1n \u0111\u1eb7t h\u00e0ng h\u00e0ng t\u1ed3n kho t\u1eeb h\u1ec7 th\u1ed1ng nh\u00e0 h\u00e0ng. 2. C\u00e1c qu\u00e1 tr\u00ecnh: \u0110\u1eb7t m\u00f3n \u0103n (0.1): X\u1eed l\u00fd \u0111\u01a1n h\u00e0ng c\u1ee7a kh\u00e1ch h\u00e0ng v\u00e0 g\u1eedi n\u00f3 \u0111\u1ebfn nh\u00e0 b\u1ebfp. N\u00f3 c\u0169ng t\u1ea1o h\u00f3a \u0111\u01a1n cho kh\u00e1ch h\u00e0ng. T\u1ea1o B\u00e1o c\u00e1o<a href=\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/\" rel=\"bookmark\"><span class=\"screen-reader-text\">Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"","_yoast_wpseo_metadesc":"","_eb_attr":"","neve_meta_sidebar":"","neve_meta_container":"","neve_meta_enable_content_width":"","neve_meta_content_width":0,"neve_meta_title_alignment":"","neve_meta_author_avatar":"","neve_post_elements_order":"","neve_meta_disable_header":"","neve_meta_disable_footer":"","neve_meta_disable_title":"","fifu_image_url":"https:\/\/external-content.duckduckgo.com\/iu\/?u=https%3A%2F%2Fcircle.visual-paradigm.com%2Fwp-content%2Fuploads%2F2017%2F06%2FData-Flow-Diagram-Food-Ordering-System.png&f=1&nofb=1&ipt=a7552c982f39d331c7c8abc521f1741ab4e9de77989677e87a3378384f578b5e&ipo=images","fifu_image_alt":"","footnotes":""},"categories":[23],"tags":[],"class_list":["post-6255","post","type-post","status-publish","format-standard","hentry","category-dfd"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD - Visual Paradigm Guides Vietnamese<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/\" \/>\n<meta property=\"og:locale\" content=\"vi_VN\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD - Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"og:description\" content=\"S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 g\u00ec? S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh d\u00f9ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 cho th\u1ea5y c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c ngu\u1ed3n, \u0111\u00edch v\u00e0 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. V\u1ec1 c\u01a1 b\u1ea3n, n\u00f3 m\u00f4 t\u1ea3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh trong h\u1ec7 th\u1ed1ng. T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng DFD? R\u00f5 r\u00e0ng v\u00e0 d\u1ec5 hi\u1ec3u: DFD gi\u00fap c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u c\u00e1ch h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n r\u00f5 r\u00e0ng v\u00e0 tr\u1ef1c quan v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u. Ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m b\u1ea5t hi\u1ec7u qu\u1ea3: B\u1eb1ng c\u00e1ch bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m ngh\u1ebdn, s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 trong quy tr\u00ecnh c\u1ee7a m\u00ecnh. C\u1ea3i thi\u1ec7n giao ti\u1ebfp: DFD \u0111\u00f3ng vai tr\u00f2 l\u00e0 ng\u00f4n ng\u1eef chung cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, nh\u00e0 ph\u00e2n t\u00edch v\u00e0 c\u00e1c b\u00ean li\u00ean quan, gi\u00fap c\u1ea3i thi\u1ec7n giao ti\u1ebfp v\u00e0 h\u1ee3p t\u00e1c. Ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: DFD l\u00e0 c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c kh\u00eda c\u1ea1nh di chuy\u1ec3n d\u1eef li\u1ec7u \u0111\u1ec1u \u0111\u01b0\u1ee3c xem x\u00e9t. T\u00e0i li\u1ec7u: Ch\u00fang cung c\u1ea5p t\u00e0i li\u1ec7u qu\u00fd gi\u00e1 cho h\u1ec7 th\u1ed1ng, h\u1eefu \u00edch cho vi\u1ec7c tham kh\u1ea3o v\u00e0 b\u1ea3o tr\u00ec trong t\u01b0\u01a1ng lai. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o m\u1ed9t DFD X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh: X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh ch\u00ednh trong h\u1ec7 th\u1ed1ng. M\u1ed7i qu\u00e1 tr\u00ecnh s\u1ebd c\u00f3 m\u1ed9t ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng ho\u1eb7c t\u1ea1o b\u00e1o c\u00e1o. X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u00e1ch h\u00e0ng, nh\u00e0 cung c\u1ea5p ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c. X\u00e1c \u0111\u1ecbnh kho d\u1eef li\u1ec7u: X\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1ec7p tin ho\u1eb7c b\u1ea5t k\u1ef3 lo\u1ea1i kho d\u1eef li\u1ec7u n\u00e0o kh\u00e1c. Bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u: X\u00e1c \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. S\u1eed d\u1ee5ng m\u0169i t\u00ean \u0111\u1ec3 bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u. T\u1ea1o s\u01a1 \u0111\u1ed3: S\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n c\u1ee7a DFD \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3. C\u00e1c qu\u00e1 tr\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt, lu\u1ed3ng d\u1eef li\u1ec7u b\u1eb1ng m\u0169i t\u00ean, kho d\u1eef li\u1ec7u b\u1eb1ng h\u00ecnh ch\u1eef nh\u1eadt h\u1edf, v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i b\u1eb1ng h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh elip. C\u00e1c k\u00fd hi\u1ec7u v\u00ed d\u1ee5 Qu\u00e1 tr\u00ecnh: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt bo g\u00f3c. Lu\u1ed3ng d\u1eef li\u1ec7u: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u0169i t\u00ean. C\u1eeda h\u00e0ng d\u1eef li\u1ec7u: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt kh\u00f4ng kh\u00e9p k\u00edn. Entiti b\u00ean ngo\u00e0i: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh elip. C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 v\u1ebd s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u B\u1eaft \u0111\u1ea7u b\u1eb1ng s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh: B\u1eaft \u0111\u1ea7u t\u1eeb c\u1ea5p \u0111\u1ed9 cao nh\u1ea5t (s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 0) th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c entiti b\u00ean ngo\u00e0i. Ph\u00e2n t\u00edch th\u00e0nh c\u00e1c c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n: Chia nh\u1ecf h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 DFD chi ti\u1ebft h\u01a1n (c\u1ea5p 1, c\u1ea5p 2, v.v.) \u0111\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u. Ghi nh\u00e3n r\u00f5 r\u00e0ng t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n: \u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c qu\u00e1 tr\u00ecnh, lu\u1ed3ng d\u1eef li\u1ec7u, c\u1eeda h\u00e0ng d\u1eef li\u1ec7u v\u00e0 c\u00e1c entiti b\u00ean ngo\u00e0i \u0111\u1ec1u \u0111\u01b0\u1ee3c ghi nh\u00e3n r\u00f5 r\u00e0ng. X\u00e1c minh v\u1edbi c\u00e1c b\u00ean li\u00ean quan: Xem x\u00e9t s\u01a1 \u0111\u1ed3 DFD c\u00f9ng v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 \u0111\u1ea7y \u0111\u1ee7. Case study v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 l\u00e0 y\u1ebfu t\u1ed1 thay \u0111\u1ed5i cu\u1ed9c ch\u01a1i trong vi\u1ec7c hi\u1ec3u v\u00e0 t\u1ed1i \u01b0u h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. H\u00e3y b\u1eaft \u0111\u1ea7u ngay v\u00e0 b\u1eaft \u0111\u1ea7u v\u1ebd b\u1ea3n \u0111\u1ed3! B\u1ed1i c\u1ea3nh Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) v\u00e0 c\u00e1ch n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n \u0103n. Case study n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c n\u00e2ng cao hi\u1ec7u qu\u1ea3 quy tr\u00ecnh \u0111\u1eb7t m\u00f3n c\u1ee7a m\u1ed9t nh\u00e0 h\u00e0ng b\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. CityBite, m\u1ed9t nh\u00e0 h\u00e0ng th\u00e0nh th\u1ecb n\u1ed5i ti\u1ebfng, \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c trong vi\u1ec7c qu\u1ea3n l\u00fd \u0111\u01a1n h\u00e0ng, h\u00e0ng t\u1ed3n kho v\u00e0 b\u00e1o c\u00e1o. \u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5, h\u1ecd quy\u1ebft \u0111\u1ecbnh ph\u00e2n t\u00edch v\u00e0 t\u00e1i thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD). M\u1ee5c ti\u00eau M\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c entiti kh\u00e1c nhau, c\u00e1c qu\u00e1 tr\u00ecnh v\u00e0 c\u00e1c c\u1eeda h\u00e0ng d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. Vi\u1ec7c tr\u1ef1c quan h\u00f3a n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ngh\u1ebdn v\u00e0 c\u00e1c khu v\u1ef1c c\u1ea7n c\u1ea3i thi\u1ec7n. T\u1ed5ng quan h\u1ec7 th\u1ed1ng H\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n c\u1ee7a CityBite bao g\u1ed3m c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa kh\u00e1ch h\u00e0ng, nh\u00e0 b\u1ebfp, nh\u00e0 cung c\u1ea5p v\u00e0 ban qu\u1ea3n l\u00fd nh\u00e0 h\u00e0ng. S\u01a1 \u0111\u1ed3 DFD ghi l\u1ea1i c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y, cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u. C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 DFD 1. C\u00e1c entiti b\u00ean ngo\u00e0i: Kh\u00e1ch h\u00e0ng: \u0110\u1eb7t m\u1ed9t \u0111\u01a1n h\u00e0ng v\u00e0 nh\u1eadn h\u00f3a \u0111\u01a1n. Nh\u00e0 cung c\u1ea5p: Nh\u1eadn c\u00e1c \u0111\u01a1n \u0111\u1eb7t h\u00e0ng h\u00e0ng t\u1ed3n kho t\u1eeb h\u1ec7 th\u1ed1ng nh\u00e0 h\u00e0ng. 2. C\u00e1c qu\u00e1 tr\u00ecnh: \u0110\u1eb7t m\u00f3n \u0103n (0.1): X\u1eed l\u00fd \u0111\u01a1n h\u00e0ng c\u1ee7a kh\u00e1ch h\u00e0ng v\u00e0 g\u1eedi n\u00f3 \u0111\u1ebfn nh\u00e0 b\u1ebfp. N\u00f3 c\u0169ng t\u1ea1o h\u00f3a \u0111\u01a1n cho kh\u00e1ch h\u00e0ng. T\u1ea1o B\u00e1o c\u00e1oNghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD\" \/>\n<meta property=\"og:url\" content=\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/\" \/>\n<meta property=\"og:site_name\" content=\"Visual Paradigm Guides Vietnamese\" \/>\n<meta property=\"article:published_time\" content=\"2026-02-04T01:13:31+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https%3A%2F%2Fcircle.visual-paradigm.com%2Fwp-content%2Fuploads%2F2017%2F06%2FData-Flow-Diagram-Food-Ordering-System.png&f=1&nofb=1&ipt=a7552c982f39d331c7c8abc521f1741ab4e9de77989677e87a3378384f578b5e&ipo=images\" \/><meta property=\"og:image\" content=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https%3A%2F%2Fcircle.visual-paradigm.com%2Fwp-content%2Fuploads%2F2017%2F06%2FData-Flow-Diagram-Food-Ordering-System.png&f=1&nofb=1&ipt=a7552c982f39d331c7c8abc521f1741ab4e9de77989677e87a3378384f578b5e&ipo=images\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:image\" content=\"https:\/\/external-content.duckduckgo.com\/iu\/?u=https%3A%2F%2Fcircle.visual-paradigm.com%2Fwp-content%2Fuploads%2F2017%2F06%2FData-Flow-Diagram-Food-Ordering-System.png&f=1&nofb=1&ipt=a7552c982f39d331c7c8abc521f1741ab4e9de77989677e87a3378384f578b5e&ipo=images\" \/>\n<meta name=\"twitter:label1\" content=\"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi\" \/>\n\t<meta name=\"twitter:data1\" content=\"vpadmin\" \/>\n\t<meta name=\"twitter:label2\" content=\"\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc\" \/>\n\t<meta name=\"twitter:data2\" content=\"5 ph\u00fat\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/\"},\"headline\":\"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD\",\"datePublished\":\"2026-02-04T01:13:31+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/\"},\"wordCount\":2295,\"commentCount\":0,\"image\":{\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2024\/10\/img_6704e2638dd43.png\",\"articleSection\":[\"DFD\"],\"inLanguage\":\"vi\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/\",\"url\":\"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/\",\"name\":\"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD - 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S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 m\u1ed9t bi\u1ec3u di\u1ec5n h\u00ecnh \u1ea3nh d\u00f9ng \u0111\u1ec3 tr\u1ef1c quan h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u b\u00ean trong m\u1ed9t h\u1ec7 th\u1ed1ng. N\u00f3 cho th\u1ea5y c\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c x\u1eed l\u00fd b\u1eb1ng c\u00e1ch x\u00e1c \u0111\u1ecbnh c\u00e1c ngu\u1ed3n, \u0111\u00edch v\u00e0 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. V\u1ec1 c\u01a1 b\u1ea3n, n\u00f3 m\u00f4 t\u1ea3 \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a c\u00e1c qu\u00e1 tr\u00ecnh trong h\u1ec7 th\u1ed1ng. T\u1ea1i sao n\u00ean s\u1eed d\u1ee5ng DFD? R\u00f5 r\u00e0ng v\u00e0 d\u1ec5 hi\u1ec3u: DFD gi\u00fap c\u00e1c b\u00ean li\u00ean quan hi\u1ec3u c\u00e1ch h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng b\u1eb1ng c\u00e1ch cung c\u1ea5p m\u1ed9t bi\u1ec3u di\u1ec5n r\u00f5 r\u00e0ng v\u00e0 tr\u1ef1c quan v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u. Ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m b\u1ea5t hi\u1ec7u qu\u1ea3: B\u1eb1ng c\u00e1ch bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u, c\u00e1c t\u1ed5 ch\u1ee9c c\u00f3 th\u1ec3 ph\u00e1t hi\u1ec7n c\u00e1c \u0111i\u1ec3m ngh\u1ebdn, s\u1ef1 tr\u00f9ng l\u1eb7p v\u00e0 c\u00e1c b\u1ea5t hi\u1ec7u qu\u1ea3 trong quy tr\u00ecnh c\u1ee7a m\u00ecnh. C\u1ea3i thi\u1ec7n giao ti\u1ebfp: DFD \u0111\u00f3ng vai tr\u00f2 l\u00e0 ng\u00f4n ng\u1eef chung cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, nh\u00e0 ph\u00e2n t\u00edch v\u00e0 c\u00e1c b\u00ean li\u00ean quan, gi\u00fap c\u1ea3i thi\u1ec7n giao ti\u1ebfp v\u00e0 h\u1ee3p t\u00e1c. Ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng: DFD l\u00e0 c\u00f4ng c\u1ee5 thi\u1ebft y\u1ebfu \u0111\u1ec3 ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng, \u0111\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c kh\u00eda c\u1ea1nh di chuy\u1ec3n d\u1eef li\u1ec7u \u0111\u1ec1u \u0111\u01b0\u1ee3c xem x\u00e9t. T\u00e0i li\u1ec7u: Ch\u00fang cung c\u1ea5p t\u00e0i li\u1ec7u qu\u00fd gi\u00e1 cho h\u1ec7 th\u1ed1ng, h\u1eefu \u00edch cho vi\u1ec7c tham kh\u1ea3o v\u00e0 b\u1ea3o tr\u00ec trong t\u01b0\u01a1ng lai. L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 t\u1ea1o m\u1ed9t DFD X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh: X\u00e1c \u0111\u1ecbnh c\u00e1c qu\u00e1 tr\u00ecnh ch\u00ednh trong h\u1ec7 th\u1ed1ng. M\u1ed7i qu\u00e1 tr\u00ecnh s\u1ebd c\u00f3 m\u1ed9t ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 x\u1eed l\u00fd \u0111\u01a1n h\u00e0ng ho\u1eb7c t\u1ea1o b\u00e1o c\u00e1o. X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i: X\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, ch\u1eb3ng h\u1ea1n nh\u01b0 kh\u00e1ch h\u00e0ng, nh\u00e0 cung c\u1ea5p ho\u1eb7c c\u00e1c h\u1ec7 th\u1ed1ng kh\u00e1c. X\u00e1c \u0111\u1ecbnh kho d\u1eef li\u1ec7u: X\u00e1c \u0111\u1ecbnh n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u tr\u1eef trong h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 c\u01a1 s\u1edf d\u1eef li\u1ec7u, t\u1ec7p tin ho\u1eb7c b\u1ea5t k\u1ef3 lo\u1ea1i kho d\u1eef li\u1ec7u n\u00e0o kh\u00e1c. Bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u: X\u00e1c \u0111\u1ecbnh c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. S\u1eed d\u1ee5ng m\u0169i t\u00ean \u0111\u1ec3 bi\u1ec3u di\u1ec5n lu\u1ed3ng d\u1eef li\u1ec7u. T\u1ea1o s\u01a1 \u0111\u1ed3: S\u1eed d\u1ee5ng c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n c\u1ee7a DFD \u0111\u1ec3 t\u1ea1o s\u01a1 \u0111\u1ed3. C\u00e1c qu\u00e1 tr\u00ecnh th\u01b0\u1eddng \u0111\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt, lu\u1ed3ng d\u1eef li\u1ec7u b\u1eb1ng m\u0169i t\u00ean, kho d\u1eef li\u1ec7u b\u1eb1ng h\u00ecnh ch\u1eef nh\u1eadt h\u1edf, v\u00e0 c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i b\u1eb1ng h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh elip. C\u00e1c k\u00fd hi\u1ec7u v\u00ed d\u1ee5 Qu\u00e1 tr\u00ecnh: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh tr\u00f2n ho\u1eb7c h\u00ecnh ch\u1eef nh\u1eadt bo g\u00f3c. Lu\u1ed3ng d\u1eef li\u1ec7u: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u0169i t\u00ean. C\u1eeda h\u00e0ng d\u1eef li\u1ec7u: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt kh\u00f4ng kh\u00e9p k\u00edn. Entiti b\u00ean ngo\u00e0i: \u0110\u01b0\u1ee3c bi\u1ec3u di\u1ec5n b\u1eb1ng h\u00ecnh vu\u00f4ng ho\u1eb7c h\u00ecnh elip. C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 v\u1ebd s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u B\u1eaft \u0111\u1ea7u b\u1eb1ng s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh: B\u1eaft \u0111\u1ea7u t\u1eeb c\u1ea5p \u0111\u1ed9 cao nh\u1ea5t (s\u01a1 \u0111\u1ed3 DFD c\u1ea5p 0) th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng v\u00e0 s\u1ef1 t\u01b0\u01a1ng t\u00e1c c\u1ee7a n\u00f3 v\u1edbi c\u00e1c entiti b\u00ean ngo\u00e0i. Ph\u00e2n t\u00edch th\u00e0nh c\u00e1c c\u1ea5p \u0111\u1ed9 th\u1ea5p h\u01a1n: Chia nh\u1ecf h\u1ec7 th\u1ed1ng th\u00e0nh c\u00e1c s\u01a1 \u0111\u1ed3 DFD chi ti\u1ebft h\u01a1n (c\u1ea5p 1, c\u1ea5p 2, v.v.) \u0111\u1ec3 hi\u1ec3u s\u00e2u h\u01a1n v\u1ec1 lu\u1ed3ng d\u1eef li\u1ec7u. Ghi nh\u00e3n r\u00f5 r\u00e0ng t\u1ea5t c\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n: \u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c qu\u00e1 tr\u00ecnh, lu\u1ed3ng d\u1eef li\u1ec7u, c\u1eeda h\u00e0ng d\u1eef li\u1ec7u v\u00e0 c\u00e1c entiti b\u00ean ngo\u00e0i \u0111\u1ec1u \u0111\u01b0\u1ee3c ghi nh\u00e3n r\u00f5 r\u00e0ng. X\u00e1c minh v\u1edbi c\u00e1c b\u00ean li\u00ean quan: Xem x\u00e9t s\u01a1 \u0111\u1ed3 DFD c\u00f9ng v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh ch\u00ednh x\u00e1c v\u00e0 \u0111\u1ed9 \u0111\u1ea7y \u0111\u1ee7. Case study v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u00f3 th\u1ec3 l\u00e0 y\u1ebfu t\u1ed1 thay \u0111\u1ed5i cu\u1ed9c ch\u01a1i trong vi\u1ec7c hi\u1ec3u v\u00e0 t\u1ed1i \u01b0u h\u00f3a lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. H\u00e3y b\u1eaft \u0111\u1ea7u ngay v\u00e0 b\u1eaft \u0111\u1ea7u v\u1ebd b\u1ea3n \u0111\u1ed3! B\u1ed1i c\u1ea3nh Trong h\u01b0\u1edbng d\u1eabn n\u00e0y, ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) v\u00e0 c\u00e1ch n\u00f3 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n \u0103n. Case study n\u00e0y t\u1eadp trung v\u00e0o vi\u1ec7c n\u00e2ng cao hi\u1ec7u qu\u1ea3 quy tr\u00ecnh \u0111\u1eb7t m\u00f3n c\u1ee7a m\u1ed9t nh\u00e0 h\u00e0ng b\u1eb1ng c\u00e1ch tr\u1ef1c quan h\u00f3a s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. CityBite, m\u1ed9t nh\u00e0 h\u00e0ng th\u00e0nh th\u1ecb n\u1ed5i ti\u1ebfng, \u0111\u1ed1i m\u1eb7t v\u1edbi nh\u1eefng th\u00e1ch th\u1ee9c trong vi\u1ec7c qu\u1ea3n l\u00fd \u0111\u01a1n h\u00e0ng, h\u00e0ng t\u1ed3n kho v\u00e0 b\u00e1o c\u00e1o. \u0110\u1ec3 t\u1ed1i \u01b0u h\u00f3a ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u1ea3i thi\u1ec7n ch\u1ea5t l\u01b0\u1ee3ng d\u1ecbch v\u1ee5, h\u1ecd quy\u1ebft \u0111\u1ecbnh ph\u00e2n t\u00edch v\u00e0 t\u00e1i thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n c\u1ee7a m\u00ecnh b\u1eb1ng c\u00e1ch s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD). M\u1ee5c ti\u00eau M\u1ee5c ti\u00eau l\u00e0 \u0111\u1ea1t \u0111\u01b0\u1ee3c s\u1ef1 hi\u1ec3u bi\u1ebft r\u00f5 r\u00e0ng v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n gi\u1eefa c\u00e1c entiti kh\u00e1c nhau, c\u00e1c qu\u00e1 tr\u00ecnh v\u00e0 c\u00e1c c\u1eeda h\u00e0ng d\u1eef li\u1ec7u trong h\u1ec7 th\u1ed1ng. Vi\u1ec7c tr\u1ef1c quan h\u00f3a n\u00e0y s\u1ebd h\u1ed7 tr\u1ee3 x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m ngh\u1ebdn v\u00e0 c\u00e1c khu v\u1ef1c c\u1ea7n c\u1ea3i thi\u1ec7n. T\u1ed5ng quan h\u1ec7 th\u1ed1ng H\u1ec7 th\u1ed1ng \u0111\u1eb7t m\u00f3n c\u1ee7a CityBite bao g\u1ed3m c\u00e1c t\u01b0\u01a1ng t\u00e1c gi\u1eefa kh\u00e1ch h\u00e0ng, nh\u00e0 b\u1ebfp, nh\u00e0 cung c\u1ea5p v\u00e0 ban qu\u1ea3n l\u00fd nh\u00e0 h\u00e0ng. S\u01a1 \u0111\u1ed3 DFD ghi l\u1ea1i c\u00e1c t\u01b0\u01a1ng t\u00e1c n\u00e0y, cung c\u1ea5p c\u00e1i nh\u00ecn to\u00e0n di\u1ec7n v\u1ec1 s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u. C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a s\u01a1 \u0111\u1ed3 DFD 1. C\u00e1c entiti b\u00ean ngo\u00e0i: Kh\u00e1ch h\u00e0ng: \u0110\u1eb7t m\u1ed9t \u0111\u01a1n h\u00e0ng v\u00e0 nh\u1eadn h\u00f3a \u0111\u01a1n. 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T\u1ea1o B\u00e1o c\u00e1oNghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD","og_url":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/","og_site_name":"Visual Paradigm Guides Vietnamese","article_published_time":"2026-02-04T01:13:31+00:00","og_image":[{"url":"https:\/\/external-content.duckduckgo.com\/iu\/?u=https%3A%2F%2Fcircle.visual-paradigm.com%2Fwp-content%2Fuploads%2F2017%2F06%2FData-Flow-Diagram-Food-Ordering-System.png&f=1&nofb=1&ipt=a7552c982f39d331c7c8abc521f1741ab4e9de77989677e87a3378384f578b5e&ipo=images","type":"","width":"","height":""},{"url":"https:\/\/external-content.duckduckgo.com\/iu\/?u=https%3A%2F%2Fcircle.visual-paradigm.com%2Fwp-content%2Fuploads%2F2017%2F06%2FData-Flow-Diagram-Food-Ordering-System.png&f=1&nofb=1&ipt=a7552c982f39d331c7c8abc521f1741ab4e9de77989677e87a3378384f578b5e&ipo=images","type":"","width":"","height":""}],"twitter_card":"summary_large_image","twitter_image":"https:\/\/external-content.duckduckgo.com\/iu\/?u=https%3A%2F%2Fcircle.visual-paradigm.com%2Fwp-content%2Fuploads%2F2017%2F06%2FData-Flow-Diagram-Food-Ordering-System.png&f=1&nofb=1&ipt=a7552c982f39d331c7c8abc521f1741ab4e9de77989677e87a3378384f578b5e&ipo=images","twitter_misc":{"\u0110\u01b0\u1ee3c vi\u1ebft b\u1edfi":"vpadmin","\u01af\u1edbc t\u00ednh th\u1eddi gian \u0111\u1ecdc":"5 ph\u00fat"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/#article","isPartOf":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/"},"headline":"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD","datePublished":"2026-02-04T01:13:31+00:00","mainEntityOfPage":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/"},"wordCount":2295,"commentCount":0,"image":{"@id":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/#primaryimage"},"thumbnailUrl":"https:\/\/guides.visual-paradigm.com\/wp-content\/uploads\/2024\/10\/img_6704e2638dd43.png","articleSection":["DFD"],"inLanguage":"vi","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/#respond"]}]},{"@type":"WebPage","@id":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/","url":"https:\/\/guides.visual-paradigm.com\/vn\/case-study-streamlining-the-food-ordering-system-with-dfd\/","name":"Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: T\u1ed1i \u01b0u h\u00f3a h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng th\u1ef1c ph\u1ea9m b\u1eb1ng DFD - 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