{"id":1784,"date":"2026-03-29T13:42:08","date_gmt":"2026-03-29T13:42:08","guid":{"rendered":"https:\/\/www.viz-note.com\/vi\/troubleshooting-common-data-flow-diagram-issues\/"},"modified":"2026-03-29T13:42:08","modified_gmt":"2026-03-29T13:42:08","slug":"troubleshooting-common-data-flow-diagram-issues","status":"publish","type":"post","link":"https:\/\/www.viz-note.com\/vi\/troubleshooting-common-data-flow-diagram-issues\/","title":{"rendered":"Kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u"},"content":{"rendered":"<p>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng trong ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang cung c\u1ea5p h\u00ecnh \u1ea3nh tr\u1ef1c quan v\u1ec1 c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n qua h\u1ec7 th\u1ed1ng, l\u00e0m n\u1ed5i b\u1eadt c\u00e1c qu\u00e1 tr\u00ecnh, kho d\u1eef li\u1ec7u, c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i v\u00e0 c\u00e1c lu\u1ed3ng k\u1ebft n\u1ed1i ch\u00fang. Tuy nhi\u00ean, vi\u1ec7c t\u1ea1o ra m\u1ed9t DFD h\u1ee3p l\u1ec7 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng \u0111\u01a1n gi\u1ea3n. Nh\u1eefng l\u1ed7i c\u00f3 th\u1ec3 xu\u1ea5t hi\u1ec7n trong qu\u00e1 tr\u00ecnh m\u00f4 h\u00ecnh h\u00f3a, d\u1eabn \u0111\u1ebfn nh\u1eefng m\u00e2u thu\u1eabn logic l\u00e0m suy y\u1ebfu to\u00e0n b\u1ed9 ki\u1ebfn tr\u00fac h\u1ec7 th\u1ed1ng.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y cung c\u1ea5p m\u1ed9t c\u00e1ch ti\u1ebfp c\u1eadn to\u00e0n di\u1ec7n \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh v\u00e0 kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u. B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c ph\u01b0\u01a1ng ph\u00e1p kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 c\u00f3 c\u1ea5u tr\u00fac, c\u00e1c nh\u00e0 ph\u00e2n t\u00edch c\u00f3 th\u1ec3 \u0111\u1ea3m b\u1ea3o m\u00f4 h\u00ecnh c\u1ee7a h\u1ecd ph\u1ea3n \u00e1nh ch\u00ednh x\u00e1c y\u00eau c\u1ea7u h\u1ec7 th\u1ed1ng v\u00e0 th\u1ef1c t\u1ebf ho\u1ea1t \u0111\u1ed9ng.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Infographic: Troubleshooting Data Flow Diagrams - Visual guide showing DFD hierarchy (Context\/Level 1\/Level 2), four cardinal errors (Black Hole, Miracle, Dangling Data, Inconsistent Naming) with icons and fixes, verification checklist, and best practices. Clean flat design with black outlines, pastel accent colors, rounded shapes, and ample white space for student-friendly learning.\" decoding=\"async\" src=\"https:\/\/www.viz-note.com\/wp-content\/uploads\/2026\/03\/dfd-troubleshooting-guide-infographic.jpg\"\/><\/figure>\n<\/div>\n<h2>Hi\u1ec3u r\u00f5 c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u1ee7a DFDs \ud83c\udfd7\ufe0f<\/h2>\n<p>Tr\u01b0\u1edbc khi kh\u1eafc ph\u1ee5c c\u00e1c l\u1ed7i c\u1ee5 th\u1ec3, \u0111i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i hi\u1ec3u c\u1ea5u tr\u00fac c\u1ee7a m\u1ed9t DFD. M\u1ed9t n\u1ed7 l\u1ef1c m\u00f4 h\u00ecnh h\u00f3a ho\u00e0n ch\u1ec9nh th\u01b0\u1eddng bao g\u1ed3m m\u1ed9t c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p c\u00e1c s\u01a1 \u0111\u1ed3:<\/p>\n<ul>\n<li><strong>S\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh (M\u1ee9c \u0111\u1ed9 0):<\/strong> G\u00f3c nh\u00ecn \u1edf c\u1ea5p \u0111\u1ed9 cao nh\u1ea5t. N\u00f3 th\u1ec3 hi\u1ec7n h\u1ec7 th\u1ed1ng nh\u01b0 m\u1ed9t qu\u00e1 tr\u00ecnh duy nh\u1ea5t t\u01b0\u01a1ng t\u00e1c v\u1edbi c\u00e1c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i. N\u00f3 x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>S\u01a1 \u0111\u1ed3 m\u1ee9c \u0111\u1ed9 1:<\/strong> Ph\u00e2n t\u00edch qu\u00e1 tr\u00ecnh ch\u00ednh t\u1eeb s\u01a1 \u0111\u1ed3 b\u1ed1i c\u1ea3nh th\u00e0nh c\u00e1c qu\u00e1 tr\u00ecnh con ch\u00ednh. N\u00f3 ti\u1ebft l\u1ed9 c\u00e1c kho d\u1eef li\u1ec7u ch\u00ednh v\u00e0 c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u ch\u00ednh.<\/li>\n<li><strong>S\u01a1 \u0111\u1ed3 m\u1ee9c \u0111\u1ed9 2:<\/strong> Ph\u00e2n t\u00edch s\u00e2u h\u01a1n c\u00e1c qu\u00e1 tr\u00ecnh c\u1ee5 th\u1ec3 t\u1eeb m\u1ee9c \u0111\u1ed9 1 th\u00e0nh c\u00e1c b\u01b0\u1edbc chi ti\u1ebft h\u01a1n.<\/li>\n<\/ul>\n<p>Vi\u1ec7c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 th\u01b0\u1eddng b\u1eaft \u0111\u1ea7u t\u1eeb c\u1ea5p \u0111\u1ed9 b\u1ed1i c\u1ea3nh v\u00e0 lan d\u1ea7n xu\u1ed1ng d\u01b0\u1edbi. Nh\u1eefng b\u1ea5t nh\u1ea5t \u1edf c\u1ea5p \u0111\u1ed9 cao s\u1ebd lan truy\u1ec1n l\u1ed7i qua t\u1ea5t c\u1ea3 c\u00e1c s\u01a1 \u0111\u1ed3 c\u1ea5p th\u1ea5p h\u01a1n.<\/p>\n<h2>B\u1ed1n l\u1ed7i logic ch\u00ednh \ud83d\udeab<\/h2>\n<p>C\u00f3 b\u1ed1n lo\u1ea1i l\u1ed7i logic c\u1ee5 th\u1ec3 th\u01b0\u1eddng xu\u1ea5t hi\u1ec7n trong DFD. Vi\u1ec7c nh\u1eadn di\u1ec7n ch\u00fang \u0111\u00f2i h\u1ecfi ph\u1ea3i xem x\u00e9t c\u1ea9n th\u1eadn c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra d\u1eef li\u1ec7u cho m\u1ed7i qu\u00e1 tr\u00ecnh.<\/p>\n<h3>1. H\u1ed1 \u0111en<\/h3>\n<p>H\u1ed1 \u0111en x\u1ea3y ra khi m\u1ed9t qu\u00e1 tr\u00ecnh c\u00f3 \u0111\u1ea7u v\u00e0o nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u ra. \u0110i\u1ec1u n\u00e0y ng\u1ee5 \u00fd r\u1eb1ng d\u1eef li\u1ec7u \u0111i v\u00e0o qu\u00e1 tr\u00ecnh v\u00e0 bi\u1ebfn m\u1ea5t m\u00e0 kh\u00f4ng ghi nh\u1eadn k\u1ebft qu\u1ea3 hay s\u1ef1 bi\u1ebfn \u0111\u1ed5i n\u00e0o. Trong h\u1ec7 th\u1ed1ng th\u1ef1c t\u1ebf, \u0111i\u1ec1u n\u00e0y l\u00e0 kh\u00f4ng th\u1ec3. M\u1ed7i \u0111\u1ea7u v\u00e0o \u0111\u1ec1u ph\u1ea3i k\u00edch ho\u1ea1t m\u1ed9t h\u00e0nh \u0111\u1ed9ng n\u00e0o \u0111\u00f3, d\u00f9 l\u00e0 l\u01b0u tr\u1eef d\u1eef li\u1ec7u, g\u1eedi ph\u1ea3n h\u1ed3i hay c\u1eadp nh\u1eadt m\u1ed9t b\u1ea3n ghi.<\/p>\n<p><strong>C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n<ul>\n<li>Theo d\u00f5i t\u1eebng lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o qu\u00e1 tr\u00ecnh.<\/li>\n<li>X\u00e1c minh xem qu\u00e1 tr\u00ecnh c\u00f3 n\u00ean t\u1ea1o b\u00e1o c\u00e1o, c\u1eadp nh\u1eadt c\u01a1 s\u1edf d\u1eef li\u1ec7u hay k\u00edch ho\u1ea1t th\u00f4ng b\u00e1o hay kh\u00f4ng.<\/li>\n<li>N\u1ebfu kh\u00f4ng t\u1ed3n t\u1ea1i \u0111\u1ea7u ra, h\u00e3y th\u00eam c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u c\u1ea7n thi\u1ebft \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o b\u1ea3o to\u00e0n d\u1eef li\u1ec7u.<\/li>\n<\/ul>\n<h3>2. Ph\u00e9p m\u00e0u<\/h3>\n<p>\u0110i\u1ec1u ng\u01b0\u1ee3c l\u1ea1i v\u1edbi h\u1ed1 \u0111en l\u00e0 ph\u00e9p m\u00e0u. \u0110i\u1ec1u n\u00e0y x\u1ea3y ra khi m\u1ed9t qu\u00e1 tr\u00ecnh t\u1ea1o ra \u0111\u1ea7u ra m\u00e0 kh\u00f4ng c\u00f3 \u0111\u1ea7u v\u00e0o n\u00e0o. \u0110i\u1ec1u n\u00e0y ng\u1ee5 \u00fd r\u1eb1ng d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c t\u1ea1o ra t\u1eeb h\u01b0 kh\u00f4ng. \u0110\u00e2y l\u00e0 m\u1ed9t l\u1ed7i logic nghi\u00eam tr\u1ecdng v\u00ec m\u1ecdi d\u1eef li\u1ec7u \u0111\u1ec1u ph\u1ea3i b\u1eaft ngu\u1ed3n t\u1eeb \u0111\u00e2u \u0111\u00f3 trong h\u1ec7 th\u1ed1ng ho\u1eb7c t\u1eeb m\u1ed9t ngu\u1ed3n b\u00ean ngo\u00e0i.<\/p>\n<p><strong>C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n<ul>\n<li>X\u00e1c \u0111\u1ecbnh ph\u1ea7n t\u1eed d\u1eef li\u1ec7u \u0111ang \u0111\u01b0\u1ee3c t\u1ea1o ra.<\/li>\n<li>X\u00e1c \u0111\u1ecbnh ngu\u1ed3n g\u1ed1c c\u1ee7a d\u1eef li\u1ec7u n\u00e0y (v\u00ed d\u1ee5: \u0111\u1ea7u v\u00e0o t\u1eeb ng\u01b0\u1eddi d\u00f9ng, d\u1eef li\u1ec7u c\u1ea3m bi\u1ebfn ho\u1eb7c m\u1ed9t qu\u00e1 tr\u00ecnh tr\u01b0\u1edbc \u0111\u00f3).<\/li>\n<li>Th\u00eam lu\u1ed3ng \u0111\u1ea7u v\u00e0o b\u1ecb thi\u1ebfu v\u00e0o b\u1ecdt qu\u00e1 tr\u00ecnh.<\/li>\n<\/ul>\n<h3>3. D\u1eef li\u1ec7u treo<\/h3>\n<p>D\u1eef li\u1ec7u treo \u0111\u1ec1 c\u1eadp \u0111\u1ebfn m\u1ed9t lu\u1ed3ng kh\u00f4ng k\u1ebft n\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 th\u1ee9 g\u00ec. \u0110i\u1ec1u n\u00e0y c\u00f3 th\u1ec3 l\u00e0 m\u1ed9t \u0111\u01b0\u1eddng th\u1eb3ng d\u1eebng \u0111\u1ed9t ng\u1ed9t \u1edf gi\u1eefa s\u01a1 \u0111\u1ed3 ho\u1eb7c k\u1ebft n\u1ed1i v\u1edbi m\u1ed9t kho\u1ea3ng tr\u1ed1ng. N\u00f3 cho th\u1ea5y s\u1ef1 gi\u00e1n \u0111o\u1ea1n trong h\u00e0nh tr\u00ecnh d\u1eef li\u1ec7u.<\/p>\n<p><strong>C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n<ul>\n<li>\u0110\u1ea3m b\u1ea3o m\u1ecdi m\u0169i t\u00ean k\u1ebft n\u1ed1i t\u1eeb ngu\u1ed3n \u0111\u1ebfn \u0111\u00edch.<\/li>\n<li>Ki\u1ec3m tra xem c\u00f3 d\u1eef li\u1ec7u l\u01b0u tr\u1eef ho\u1eb7c th\u1ef1c th\u1ec3 b\u00ean ngo\u00e0i n\u00e0o b\u1ecb thi\u1ebfu hay kh\u00f4ng.<\/li>\n<li>X\u00e1c minh r\u1eb1ng quy tr\u00ecnh \u0111\u00edch th\u1ef1c s\u1ef1 c\u1ea7n ph\u1ea7n t\u1eed d\u1eef li\u1ec7u c\u1ee5 th\u1ec3 n\u00e0y.<\/li>\n<\/ul>\n<h3>4. T\u00ean g\u1ecdi kh\u00f4ng nh\u1ea5t qu\u00e1n<\/h3>\n<p>C\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u ph\u1ea3i \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n nh\u1ea5t qu\u00e1n \u1edf t\u1ea5t c\u1ea3 c\u00e1c c\u1ea5p \u0111\u1ed9. N\u1ebfu m\u1ed9t lu\u1ed3ng \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n l\u00e0 \u201c\u0110\u01a1n h\u00e0ng kh\u00e1ch h\u00e0ng\u201d trong s\u01a1 \u0111\u1ed3 c\u1ea5p 1, th\u00ec kh\u00f4ng n\u00ean \u0111\u1ed5i t\u00ean th\u00e0nh \u201cY\u00eau c\u1ea7u mua h\u00e0ng\u201d trong s\u01a1 \u0111\u1ed3 c\u1ea5p 2 tr\u1eeb khi \u00fd ngh\u0129a th\u1ef1c s\u1ef1 \u0111\u00e3 thay \u0111\u1ed5i c\u01a1 b\u1ea3n. Vi\u1ec7c \u0111\u1eb7t t\u00ean kh\u00f4ng nh\u1ea5t qu\u00e1n s\u1ebd g\u00e2y nh\u1ea7m l\u1eabn cho c\u00e1c b\u00ean li\u00ean quan v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n.<\/p>\n<p><strong>C\u00e1ch kh\u1eafc ph\u1ee5c:<\/strong><\/p>\n<ul>\n<li>T\u1ea1o t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u \u0111\u1ec3 chu\u1ea9n h\u00f3a thu\u1eadt ng\u1eef.<\/li>\n<li>Th\u1ef1c hi\u1ec7n ki\u1ec3m tra tham chi\u1ebfu ch\u00e9o gi\u1eefa s\u01a1 \u0111\u1ed3 cha v\u00e0 s\u01a1 \u0111\u1ed3 con.<\/li>\n<li>\u0110\u1ea3m b\u1ea3o r\u1eb1ng t\u00ean c\u1ee7a lu\u1ed3ng v\u00e0o m\u1ed9t quy tr\u00ecnh tr\u00f9ng kh\u1edbp v\u1edbi t\u00ean c\u1ee7a lu\u1ed3ng ra kh\u1ecfi quy tr\u00ecnh \u0111\u00f3 (tr\u1eeb khi \u0111\u00e3 \u0111\u01b0\u1ee3c bi\u1ebfn \u0111\u1ed5i).<\/li>\n<\/ul>\n<h2>\u0110\u1ed9 chi ti\u1ebft v\u00e0 ph\u00e2n r\u00e3 quy tr\u00ecnh \ud83e\udde9<\/h2>\n<p>M\u1ed9t trong nh\u1eefng v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn nh\u1ea5t trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) l\u00e0 ph\u00e2n r\u00e3 kh\u00f4ng \u0111\u00fang c\u00e1ch. Bong b\u00f3ng quy tr\u00ecnh kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 l\u1edbn (qu\u00e1 nhi\u1ec1u logic) c\u0169ng kh\u00f4ng \u0111\u01b0\u1ee3c qu\u00e1 nh\u1ecf (c\u00e1c b\u01b0\u1edbc \u0111\u01a1n gi\u1ea3n).<\/p>\n<h3>Qu\u00e1 nhi\u1ec1u quy tr\u00ecnh<\/h3>\n<p>N\u1ebfu s\u01a1 \u0111\u1ed3 c\u1ea5p 1 c\u00f3 h\u01a1n b\u1ea3y \u0111\u1ebfn ch\u00edn quy tr\u00ecnh, vi\u1ec7c \u0111\u1ecdc v\u00e0 qu\u1ea3n l\u00fd s\u1ebd tr\u1edf n\u00ean kh\u00f3 kh\u0103n. \u0110i\u1ec1u n\u00e0y th\u01b0\u1eddng cho th\u1ea5y r\u1eb1ng nh\u00e0 ph\u00e2n t\u00edch ch\u01b0a nh\u00f3m c\u00e1c ch\u1ee9c n\u0103ng li\u00ean quan l\u1ea1i v\u1edbi nhau.<\/p>\n<ul>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>Nh\u00f3m c\u00e1c quy tr\u00ecnh theo khu v\u1ef1c ch\u1ee9c n\u0103ng ho\u1eb7c n\u0103ng l\u1ef1c kinh doanh.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>Xem x\u00e9t vi\u1ec7c t\u00e1ch m\u1ed9t quy tr\u00ecnh th\u00e0nh hai quy tr\u00ecnh ri\u00eang bi\u1ec7t n\u1ebfu n\u00f3 x\u1eed l\u00fd hai ch\u1ee9c n\u0103ng logic kh\u00e1c nhau.<\/li>\n<\/ul>\n<h3>Qu\u00e1 \u00edt quy tr\u00ecnh<\/h3>\n<p>Ng\u01b0\u1ee3c l\u1ea1i, n\u1ebfu m\u1ed9t quy tr\u00ecnh ch\u1ecbu tr\u00e1ch nhi\u1ec7m x\u1eed l\u00fd m\u1ecdi th\u1ee9 t\u1eeb \u0111\u0103ng nh\u1eadp ng\u01b0\u1eddi d\u00f9ng \u0111\u1ebfn sao l\u01b0u c\u01a1 s\u1edf d\u1eef li\u1ec7u, th\u00ec n\u00f3 qu\u00e1 ph\u1ee9c t\u1ea1p. \u0110i\u1ec1u n\u00e0y khi\u1ebfn vi\u1ec7c thi\u1ebft k\u1ebf c\u00e1c thu\u1eadt to\u00e1n ho\u1eb7c giao di\u1ec7n c\u1ee5 th\u1ec3 cho bong b\u00f3ng \u0111\u00f3 tr\u1edf n\u00ean b\u1ea5t kh\u1ea3 thi.<\/p>\n<ul>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>Ph\u00e2n r\u00e3 c\u00e1c quy tr\u00ecnh ph\u1ee9c t\u1ea1p th\u00e0nh c\u00e1c quy tr\u00ecnh con cho s\u01a1 \u0111\u1ed3 c\u1ea5p 2.<\/li>\n<li><strong>Gi\u1ea3i ph\u00e1p:<\/strong>\u0110\u1ea3m b\u1ea3o m\u1ed7i quy tr\u00ecnh c\u00f3 t\u00ean duy nh\u1ea5t g\u1ed3m \u0111\u1ed9ng t\u1eeb + danh t\u1eeb (v\u00ed d\u1ee5: \u201cX\u00e1c th\u1ef1c \u0111\u0103ng nh\u1eadp\u201d thay v\u00ec \u201c\u0110\u0103ng nh\u1eadp v\u00e0 X\u00e1c th\u1ef1c v\u00e0 L\u01b0u\u201d).<\/li>\n<\/ul>\n<h2>\u0110\u1ed9 to\u00e0n v\u1eb9n c\u1ee7a kho d\u1eef li\u1ec7u \ud83d\uddc4\ufe0f<\/h2>\n<p>C\u00e1c kho d\u1eef li\u1ec7u \u0111\u1ea1i di\u1ec7n cho c\u00e1c kho l\u01b0u tr\u1eef n\u01a1i d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c l\u01b0u l\u1ea1i \u0111\u1ec3 s\u1eed d\u1ee5ng trong t\u01b0\u01a1ng lai. L\u1ed7i \u1edf \u0111\u00e2y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn m\u1ea5t d\u1eef li\u1ec7u ho\u1eb7c h\u1ecfng d\u1eef li\u1ec7u.<\/p>\n<h3>Thi\u1ebfu kho d\u1eef li\u1ec7u<\/h3>\n<p>R\u1ea5t th\u01b0\u1eddng xuy\u00ean qu\u00ean th\u00eam kho d\u1eef li\u1ec7u khi m\u1ed9t quy tr\u00ecnh c\u1ea7n l\u01b0u th\u00f4ng tin \u0111\u1ec3 truy xu\u1ea5t sau n\u00e0y. V\u00ed d\u1ee5, ch\u1ee9c n\u0103ng \u201cX\u1eed l\u00fd \u0111\u01a1n h\u00e0ng\u201d ph\u1ea3i l\u01b0u chi ti\u1ebft \u0111\u01a1n h\u00e0ng \u1edf \u0111\u00e2u \u0111\u00f3 tr\u01b0\u1edbc khi giao d\u1ecbch ho\u00e0n t\u1ea5t.<\/p>\n<ul>\n<li><strong>Ki\u1ec3m tra:<\/strong>T\u00ecm ki\u1ebfm c\u00e1c quy tr\u00ecnh thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i m\u00e0 kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i v\u1edbi kho d\u1eef li\u1ec7u t\u01b0\u01a1ng \u1ee9ng.<\/li>\n<\/ul>\n<h3>H\u01b0\u1edbng lu\u1ed3ng d\u1eef li\u1ec7u sai<\/h3>\n<p>C\u00e1c m\u0169i t\u00ean k\u1ebft n\u1ed1i gi\u1eefa kho d\u1eef li\u1ec7u ph\u1ea3i ch\u1ec9 ra h\u01b0\u1edbng di chuy\u1ec3n d\u1eef li\u1ec7u ch\u00ednh x\u00e1c. M\u1ed9t lu\u1ed3ng t\u1eeb kho d\u1eef li\u1ec7u sang quy tr\u00ecnh c\u00f3 ngh\u0129a l\u00e0 \u0111\u1ecdc d\u1eef li\u1ec7u. M\u1ed9t lu\u1ed3ng t\u1eeb quy tr\u00ecnh sang kho d\u1eef li\u1ec7u c\u00f3 ngh\u0129a l\u00e0 ghi d\u1eef li\u1ec7u. Vi\u1ec7c nh\u1ea7m l\u1eabn gi\u1eefa hai tr\u01b0\u1eddng h\u1ee3p n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn l\u1ed7i logic trong thi\u1ebft k\u1ebf c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/p>\n<ul>\n<li><strong>Ki\u1ec3m tra:<\/strong>X\u00e1c minh r\u1eb1ng c\u00e1c thao t\u00e1c \u0111\u1ecdc \u0111i t\u1eeb L\u01b0u tr\u1eef \u0111\u1ebfn Quy tr\u00ecnh.<\/li>\n<li><strong>Ki\u1ec3m tra:<\/strong>X\u00e1c minh r\u1eb1ng c\u00e1c thao t\u00e1c ghi \u0111i t\u1eeb Quy tr\u00ecnh \u0111\u1ebfn L\u01b0u tr\u1eef.<\/li>\n<\/ul>\n<h2>C\u00e1c k\u1ef9 thu\u1eadt x\u00e1c minh v\u00e0 ki\u1ec3m ch\u1ee9ng \ud83e\uddd0<\/h2>\n<p>Sau khi s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c v\u1ebd xong, n\u00f3 ph\u1ea3i \u0111\u01b0\u1ee3c x\u00e1c minh d\u1ef1a tr\u00ean c\u00e1c y\u00eau c\u1ea7u kinh doanh th\u1ef1c t\u1ebf. M\u1ed9t s\u1ed1 k\u1ef9 thu\u1eadt gi\u00fap \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 ch\u00ednh x\u00e1c.<\/p>\n<h3>1. Quy t\u1eafc B\u1ea3o to\u00e0n D\u1eef li\u1ec7u<\/h3>\n<p>Quy t\u1eafc n\u00e0y n\u00eau r\u1eb1ng c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a m\u1ed9t quy tr\u00ecnh ph\u1ea3i \u0111\u1ee7 \u0111\u1ec3 th\u1ef1c hi\u1ec7n ch\u1ee9c n\u0103ng \u0111\u01b0\u1ee3c m\u00f4 t\u1ea3. N\u1ebfu m\u1ed9t quy tr\u00ecnh \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n l\u00e0 \u201cT\u00ednh thu\u1ebf\u201d, \u0111\u1ea7u v\u00e0o ph\u1ea3i bao g\u1ed3m s\u1ed1 ti\u1ec1n ch\u1ecbu thu\u1ebf v\u00e0 t\u1ef7 l\u1ec7 thu\u1ebf, v\u00e0 \u0111\u1ea7u ra ph\u1ea3i l\u00e0 gi\u00e1 tr\u1ecb thu\u1ebf \u0111\u00e3 t\u00ednh to\u00e1n.<\/p>\n<h3>2. Quy t\u1eafc Ph\u00e2n r\u00e3 Quy tr\u00ecnh<\/h3>\n<p>C\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra \u1edf c\u1ea5p \u0111\u1ed9 1 ph\u1ea3i kh\u1edbp v\u1edbi t\u1ed5ng c\u00e1c \u0111\u1ea7u v\u00e0o v\u00e0 \u0111\u1ea7u ra c\u1ee7a c\u00e1c quy tr\u00ecnh con \u1edf c\u1ea5p \u0111\u1ed9 2. N\u1ebfu s\u01a1 \u0111\u1ed3 c\u1ea5p \u0111\u1ed9 1 hi\u1ec3n th\u1ecb \u0111\u1ea7u v\u00e0o \u201cM\u00e3 kh\u00e1ch h\u00e0ng\u201d \u0111i v\u00e0o v\u00f2ng tr\u00f2n \u201cX\u1eed l\u00fd \u0111\u01a1n h\u00e0ng\u201d, s\u01a1 \u0111\u1ed3 con c\u1ea5p \u0111\u1ed9 2 ph\u1ea3i hi\u1ec3n th\u1ecb \u201cM\u00e3 kh\u00e1ch h\u00e0ng\u201d \u0111i v\u00e0o \u00edt nh\u1ea5t m\u1ed9t trong c\u00e1c quy tr\u00ecnh con.<\/p>\n<h3>3. Ki\u1ec3m tra c\u00e2n b\u1eb1ng<\/h3>\n<p>\u0110\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o m\u1ed9t quy tr\u00ecnh cha gi\u1ed1ng nhau v\u1edbi c\u00e1c lu\u1ed3ng d\u1eef li\u1ec7u \u0111i v\u00e0o t\u1eadp h\u1ee3p c\u00e1c quy tr\u00ecnh con. \u0110i\u1ec1u n\u00e0y duy tr\u00ec t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a c\u1ea5u tr\u00fac ph\u00e2n c\u1ea5p.<\/p>\n<h2>B\u1ea3ng ki\u1ec3m tra kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 ph\u1ed5 bi\u1ebfn \ud83d\udccb<\/h2>\n<p>S\u1eed d\u1ee5ng b\u1ea3ng sau \u0111\u1ec3 xem x\u00e9t s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n m\u1ed9t c\u00e1ch h\u1ec7 th\u1ed1ng.<\/p>\n<table border=\"1\" cellpadding=\"10\" cellspacing=\"0\">\n<tr>\n<th><strong>Lo\u1ea1i v\u1ea5n \u0111\u1ec1<\/strong><\/th>\n<th><strong>M\u00f4 t\u1ea3<\/strong><\/th>\n<th><strong>T\u00e1c \u0111\u1ed9ng<\/strong><\/th>\n<th><strong>B\u01b0\u1edbc kh\u1eafc ph\u1ee5c<\/strong><\/th>\n<\/tr>\n<tr>\n<td>L\u1ed7 \u0111en<\/td>\n<td>Quy tr\u00ecnh c\u00f3 \u0111\u1ea7u v\u00e0o nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u ra<\/td>\n<td>M\u1ea5t d\u1eef li\u1ec7u; lu\u1ed3ng c\u00f4ng vi\u1ec7c b\u1ecb gi\u00e1n \u0111o\u1ea1n<\/td>\n<td>Th\u00eam lu\u1ed3ng \u0111\u1ea7u ra ho\u1eb7c \u0111\u1ecbnh ngh\u0129a l\u1ea1i ch\u1ee9c n\u0103ng quy tr\u00ecnh<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00e9p m\u00e0u<\/td>\n<td>Quy tr\u00ecnh c\u00f3 \u0111\u1ea7u ra nh\u01b0ng kh\u00f4ng c\u00f3 \u0111\u1ea7u v\u00e0o<\/td>\n<td>Sinh d\u1eef li\u1ec7u kh\u00f4ng h\u1ee3p l\u1ec7<\/td>\n<td>T\u00ecm ngu\u1ed3n d\u1eef li\u1ec7u v\u00e0 th\u00eam c\u00e1c lu\u1ed3ng \u0111\u1ea7u v\u00e0o<\/td>\n<\/tr>\n<tr>\n<td>Lu\u1ed3ng treo<\/td>\n<td>M\u0169i t\u00ean kh\u00f4ng k\u1ebft n\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 th\u1ee9 g\u00ec<\/td>\n<td>\u0110\u01b0\u1eddng d\u1eabn d\u1eef li\u1ec7u b\u1ecb h\u1ecfng<\/td>\n<td>K\u1ebft n\u1ed1i v\u1edbi th\u1ef1c th\u1ec3, quy tr\u00ecnh ho\u1eb7c l\u01b0u tr\u1eef ph\u00f9 h\u1ee3p<\/td>\n<\/tr>\n<tr>\n<td>S\u1ef1 kh\u00f4ng nh\u1ea5t qu\u00e1n trong \u0111\u1eb7t t\u00ean<\/td>\n<td>D\u1eef li\u1ec7u gi\u1ed1ng nhau \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean kh\u00e1c nhau<\/td>\n<td>G\u00e2y nh\u1ea7m l\u1eabn cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n<\/td>\n<td>Ti\u00eau chu\u1ea9n h\u00f3a thu\u1eadt ng\u1eef trong t\u1eeb \u0111i\u1ec3n d\u1eef li\u1ec7u<\/td>\n<\/tr>\n<tr>\n<td>Ph\u00e2n r\u00e3 kh\u00f4ng c\u00e2n b\u1eb1ng<\/td>\n<td>C\u00e1c \u0111\u1ea7u v\u00e0o\/\u0111\u1ea7u ra c\u1ee7a con kh\u00e1c v\u1edbi cha<\/td>\n<td>Kho\u1ea3ng tr\u1ed1ng logic trong th\u1ee9 b\u1eadc<\/td>\n<td>\u0110i\u1ec1u ch\u1ec9nh lu\u1ed3ng \u0111\u1ec3 ph\u00f9 h\u1ee3p v\u1edbi quy tr\u00ecnh cha<\/td>\n<\/tr>\n<\/table>\n<h2>Quy t\u1eafc \u0111\u1eb7t t\u00ean v\u00e0 \u0111\u1ed9 r\u00f5 r\u00e0ng \ud83c\udff7\ufe0f<\/h2>\n<p>\u0110\u1eb7t t\u00ean r\u00f5 r\u00e0ng l\u00e0 r\u1ea5t quan tr\u1ecdng cho giao ti\u1ebfp v\u1edbi c\u00e1c b\u00ean li\u00ean quan. T\u00ean quy tr\u00ecnh n\u00ean l\u00e0 \u0111\u1ed9ng t\u1eeb theo sau l\u00e0 danh t\u1eeb (v\u00ed d\u1ee5: \u201cC\u1eadp nh\u1eadt Kho h\u00e0ng\u201d). T\u00ean lu\u1ed3ng d\u1eef li\u1ec7u n\u00ean l\u00e0 danh t\u1eeb (v\u00ed d\u1ee5: \u201cB\u00e1o c\u00e1o Kho h\u00e0ng\u201d).<\/p>\n<p>Khi kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 v\u1ec1 \u0111\u1eb7t t\u00ean:<\/p>\n<ul>\n<li><strong>Tr\u00e1nh d\u00f9ng vi\u1ebft t\u1eaft:<\/strong>D\u00f9ng t\u1eeb \u0111\u1ea7y \u0111\u1ee7 tr\u1eeb khi vi\u1ebft t\u1eaft \u0111\u01b0\u1ee3c hi\u1ec3u ph\u1ed5 bi\u1ebfn trong t\u1ed5 ch\u1ee9c.<\/li>\n<li><strong>C\u1ee5 th\u1ec3 h\u00f3a:<\/strong>\u201cD\u1eef li\u1ec7u\u201d qu\u00e1 m\u01a1 h\u1ed3. H\u00e3y d\u00f9ng \u201c\u0110\u1ecba ch\u1ec9 Kh\u00e1ch h\u00e0ng\u201d ho\u1eb7c \u201cH\u1ed3 s\u01a1 Thanh to\u00e1n\u201d.<\/li>\n<li><strong>Th\u1eddi gian nh\u1ea5t qu\u00e1n:<\/strong>Gi\u1eef t\u00ean quy tr\u00ecnh \u1edf th\u00ec hi\u1ec7n t\u1ea1i (\u201cT\u1ea1o B\u00e1o c\u00e1o\u201d ch\u1ee9 kh\u00f4ng ph\u1ea3i \u201c\u0110\u00e3 t\u1ea1o B\u00e1o c\u00e1o\u201d).<\/li>\n<\/ul>\n<h2>T\u00edch h\u1ee3p v\u1edbi c\u00e1c m\u00f4 h\u00ecnh kh\u00e1c \ud83d\udd04<\/h2>\n<p>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u kh\u00f4ng t\u1ed3n t\u1ea1i m\u1ed9t c\u00e1ch bi\u1ec7t. Ch\u00fang th\u01b0\u1eddng c\u1ea7n \u0111\u01b0\u1ee3c \u0111\u1ed3ng b\u1ed9 v\u1edbi c\u00e1c k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a kh\u00e1c.<\/p>\n<h3>S\u01a1 \u0111\u1ed3 quan h\u1ec7 th\u1ef1c th\u1ec3 (ERD)<\/h3>\n<p>C\u00e1c kho d\u1eef li\u1ec7u trong DFD c\u1ea7n ph\u1ea3i ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c b\u1ea3ng \u0111\u01b0\u1ee3c \u0111\u1ecbnh ngh\u0129a trong ERD. N\u1ebfu DFD hi\u1ec3n th\u1ecb m\u1ed9t kho d\u1eef li\u1ec7u \u201cTh\u00f4ng tin Kh\u00e1ch h\u00e0ng\u201d nh\u01b0ng ERD l\u1ea1i c\u00f3 \u201cNg\u01b0\u1eddi d\u00f9ng\u201d v\u00e0 \u201cChi ti\u1ebft Li\u00ean h\u1ec7\u201d, th\u00ec DFD c\u1ea7n \u0111\u01b0\u1ee3c \u0111i\u1ec1u ch\u1ec9nh \u0111\u1ec3 ph\u1ea3n \u00e1nh c\u1ea5u tr\u00fac c\u01a1 s\u1edf d\u1eef li\u1ec7u th\u1ef1c t\u1ebf.<\/p>\n<h3>S\u01a1 \u0111\u1ed3 chuy\u1ec3n tr\u1ea1ng th\u00e1i<\/h3>\n<p>DFD t\u1eadp trung v\u00e0o s\u1ef1 di chuy\u1ec3n d\u1eef li\u1ec7u, trong khi S\u01a1 \u0111\u1ed3 Tr\u1ea1ng th\u00e1i t\u1eadp trung v\u00e0o c\u00e1c tr\u1ea1ng th\u00e1i h\u1ec7 th\u1ed1ng. \u0110\u1ea3m b\u1ea3o c\u00e1c quy tr\u00ecnh trong DFD \u0111\u00fang c\u00e1ch k\u00edch ho\u1ea1t c\u00e1c thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh trong S\u01a1 \u0111\u1ed3 Tr\u1ea1ng th\u00e1i.<\/p>\n<h2>B\u1ea3o tr\u00ec s\u01a1 \u0111\u1ed3 theo th\u1eddi gian \ud83d\udcc5<\/h2>\n<p>H\u1ec7 th\u1ed1ng thay \u0111\u1ed5i theo th\u1eddi gian. M\u1ed9t DFD \u0111\u01b0\u1ee3c t\u1ea1o trong giai \u0111o\u1ea1n y\u00eau c\u1ea7u c\u00f3 th\u1ec3 tr\u1edf n\u00ean l\u1ed7i th\u1eddi sau giai \u0111o\u1ea1n tri\u1ec3n khai. Vi\u1ec7c b\u1ea3o tr\u00ec \u0111\u00f2i h\u1ecfi chi\u1ebfn l\u01b0\u1ee3c ki\u1ec3m so\u00e1t phi\u00ean b\u1ea3n.<\/p>\n<ul>\n<li><strong>Phi\u00ean b\u1ea3n h\u00f3a:<\/strong>G\u00e1n m\u1ed7i s\u01a1 \u0111\u1ed3 m\u1ed9t s\u1ed1 phi\u00ean b\u1ea3n v\u00e0 ng\u00e0y th\u00e1ng.<\/li>\n<li><strong>S\u1ed5 ghi ch\u00e9p thay \u0111\u1ed5i:<\/strong>Ghi ch\u00e9p l\u00fd do thay \u0111\u1ed5i (v\u00ed d\u1ee5: \u201cC\u1eadp nh\u1eadt \u0111\u1ec3 ph\u1ea3n \u00e1nh c\u1ed5ng thanh to\u00e1n m\u1edbi\u201d).<\/li>\n<li><strong>V\u00f2ng ki\u1ec3m tra:<\/strong> L\u00ean l\u1ecbch ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 v\u1edbi c\u00e1c b\u00ean li\u00ean quan kinh doanh \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o s\u01a1 \u0111\u1ed3 v\u1eabn ph\u00f9 h\u1ee3p v\u1edbi th\u1ef1c t\u1ebf kinh doanh.<\/li>\n<\/ul>\n<h2>C\u00f4ng c\u1ee5 so v\u1edbi Ki\u1ec3m tra th\u1ee7 c\u00f4ng \ud83d\udda5\ufe0f<\/h2>\n<p>M\u1eb7c d\u00f9 c\u00f3 c\u00e1c c\u00f4ng c\u1ee5 m\u00f4 h\u00ecnh h\u00f3a h\u1ed7 tr\u1ee3 vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD), nh\u01b0ng ch\u00fang kh\u00f4ng th\u1ec3 sai s\u00f3t. C\u00e1c c\u00f4ng c\u1ee5 t\u1ef1 \u0111\u1ed9ng c\u00f3 th\u1ec3 ki\u1ec3m tra l\u1ed7i c\u00fa ph\u00e1p (nh\u01b0 c\u00e1c \u0111\u01b0\u1eddng n\u1ed1i treo), nh\u01b0ng ch\u00fang kh\u00f4ng th\u1ec3 x\u00e1c minh logic kinh doanh. M\u1ed9t chuy\u00ean vi\u00ean ph\u00e2n t\u00edch con ng\u01b0\u1eddi ph\u1ea3i xem x\u00e9t s\u01a1 \u0111\u1ed3 \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o n\u00f3 h\u1ee3p l\u00fd trong b\u1ed1i c\u1ea3nh ho\u1ea1t \u0111\u1ed9ng kinh doanh.<\/p>\n<p>Khi s\u1eed d\u1ee5ng ph\u1ea7n m\u1ec1m m\u00f4 h\u00ecnh h\u00f3a th\u00f4ng th\u01b0\u1eddng:<\/p>\n<ul>\n<li>S\u1eed d\u1ee5ng c\u00e1c t\u00ednh n\u0103ng x\u00e1c th\u1ef1c t\u00edch h\u1ee3p \u0111\u1ec3 ki\u1ec3m tra k\u1ebft n\u1ed1i c\u01a1 b\u1ea3n.<\/li>\n<li>Kh\u00f4ng n\u00ean tin t\u01b0\u1edfng v\u00e0o ph\u1ea7n m\u1ec1m \u0111\u1ec3 \u0111\u1eb7t t\u00ean cho c\u00e1c quy tr\u00ecnh c\u1ee7a b\u1ea1n; h\u00e3y s\u1eed d\u1ee5ng ph\u00e1n \u0111o\u00e1n c\u1ee7a con ng\u01b0\u1eddi.<\/li>\n<li>Xu\u1ea5t s\u01a1 \u0111\u1ed3 sang \u0111\u1ecbnh d\u1ea1ng PDF \u0111\u1ec3 c\u00e1c b\u00ean li\u00ean quan xem x\u00e9t, n\u01a1i ch\u1ec9nh s\u1eeda b\u1ecb v\u00f4 hi\u1ec7u h\u00f3a nh\u1eb1m ng\u0103n ng\u1eeba thay \u0111\u1ed5i v\u00f4 t\u00ecnh.<\/li>\n<\/ul>\n<h2>Nghi\u00ean c\u1ee9u tr\u01b0\u1eddng h\u1ee3p: Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 trong h\u1ec7 th\u1ed1ng b\u00e1n l\u1ebb \ud83d\uded2<\/h2>\n<p>H\u00e3y xem x\u00e9t m\u1ed9t t\u00ecnh hu\u1ed1ng m\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u c\u1ee7a h\u1ec7 th\u1ed1ng b\u00e1n l\u1ebb \u0111\u00e3 th\u1ea5t b\u1ea1i trong qu\u00e1 tr\u00ecnh ki\u1ec3m th\u1eed ch\u1ea5p nh\u1eadn ng\u01b0\u1eddi d\u00f9ng.<\/p>\n<h3>V\u1ea5n \u0111\u1ec1<\/h3>\n<p>Ng\u01b0\u1eddi d\u00f9ng b\u00e1o c\u00e1o r\u1eb1ng m\u1ee9c t\u1ed3n kho kh\u00f4ng \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt khi c\u00f3 giao d\u1ecbch b\u00e1n. S\u01a1 \u0111\u1ed3 c\u1ea5p 1 cho th\u1ea5y m\u1ed9t quy tr\u00ecnh &#8216;X\u1eed l\u00fd B\u00e1n h\u00e0ng&#8217; nh\u1eadn &#8216;Chi ti\u1ebft B\u00e1n h\u00e0ng&#8217; l\u00e0m \u0111\u1ea7u v\u00e0o.<\/p>\n<h3>Ch\u1ea9n \u0111o\u00e1n<\/h3>\n<p>Sau khi ki\u1ec3m tra k\u1ef9 l\u01b0\u1ee1ng ph\u00e2n r\u00e3 c\u1ea5p 2, qu\u1ea3 c\u1ea7u &#8216;X\u1eed l\u00fd B\u00e1n h\u00e0ng&#8217; \u0111\u01b0\u1ee3c chia th\u00e0nh &#8216;T\u00ednh T\u1ed5ng&#8217; v\u00e0 &#8216;Ghi Nh\u1eadn Giao d\u1ecbch&#8217;. Tuy nhi\u00ean, lu\u1ed3ng d\u1eef li\u1ec7u k\u1ebft n\u1ed1i &#8216;Ghi Nh\u1eadn Giao d\u1ecbch&#8217; v\u1edbi &#8216;Kho L\u01b0u Tr\u1eef T\u1ed3n Kho&#8217; l\u1ea1i b\u1ecb thi\u1ebfu. \u0110\u00e2y l\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p Black Hole kinh \u0111i\u1ec3n \u1edf ph\u00eda t\u1ed3n kho, d\u00f9 quy tr\u00ecnh \u0111\u00f3 v\u1eabn c\u00f3 \u0111\u1ea7u ra.<\/p>\n<h3>Gi\u1ea3i ph\u00e1p<\/h3>\n<p>C\u00e1c chuy\u00ean vi\u00ean ph\u00e2n t\u00edch \u0111\u00e3 th\u00eam lu\u1ed3ng d\u1eef li\u1ec7u &#8216;C\u1eadp nh\u1eadt T\u1ed3n kho&#8217; t\u1eeb quy tr\u00ecnh &#8216;Ghi Nh\u1eadn Giao d\u1ecbch&#8217; \u0111\u1ebfn &#8216;Kho L\u01b0u Tr\u1eef T\u1ed3n Kho&#8217;. H\u1ec7 th\u1ed1ng \u0111\u01b0\u1ee3c ki\u1ec3m th\u1eed l\u1ea1i v\u00e0 m\u1ee9c t\u1ed3n kho \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt ch\u00ednh x\u00e1c.<\/p>\n<h2>C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho chuy\u00ean vi\u00ean ph\u00e2n t\u00edch \ud83d\udc68\u200d\ud83d\udcbb<\/h2>\n<p>\u0110\u1ec3 gi\u1ea3m thi\u1ec3u n\u1ed7 l\u1ef1c kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 trong t\u01b0\u01a1ng lai, h\u00e3y \u00e1p d\u1ee5ng c\u00e1c th\u1ef1c h\u00e0nh n\u00e0y ngay t\u1eeb \u0111\u1ea7u:<\/p>\n<ul>\n<li><strong>B\u1eaft \u0111\u1ea7u nh\u1ecf g\u1ecdn:<\/strong>B\u1eaft \u0111\u1ea7u b\u1eb1ng m\u1ed9t s\u01a1 \u0111\u1ed3 B\u1ed1i c\u1ea3nh r\u00f5 r\u00e0ng tr\u01b0\u1edbc khi ti\u1ebfn h\u00e0nh ph\u00e2n r\u00e3.<\/li>\n<li><strong>S\u1eed d\u1ee5ng m\u1eabu:<\/strong>\u00c1p d\u1ee5ng c\u00e1c h\u00ecnh d\u1ea1ng chu\u1ea9n cho quy tr\u00ecnh (h\u00ecnh ch\u1eef nh\u1eadt tr\u00f2n) v\u00e0 kho d\u1eef li\u1ec7u (h\u00ecnh ch\u1eef nh\u1eadt m\u1edf \u0111\u1ea7u) \u0111\u1ec3 tr\u00e1nh nh\u1ea7m l\u1eabn.<\/li>\n<li><strong>Tham gia c\u00e1c b\u00ean li\u00ean quan:<\/strong>\u0110i d\u1ecdc theo s\u01a1 \u0111\u1ed3 c\u00f9ng ng\u01b0\u1eddi d\u00f9ng kinh doanh. N\u1ebfu h\u1ecd hi\u1ec3u \u0111\u01b0\u1ee3c lu\u1ed3ng, th\u00ec kh\u1ea3 n\u0103ng cao l\u00e0 s\u01a1 \u0111\u1ed3 \u0111\u00fang.<\/li>\n<li><strong>L\u1eb7p l\u1ea1i:<\/strong>Chu\u1ea9n b\u1ecb s\u1eb5n s\u00e0ng v\u1ebd l\u1ea1i s\u01a1 \u0111\u1ed3 nhi\u1ec1u l\u1ea7n. B\u1ea3n nh\u00e1p \u0111\u1ea7u ti\u00ean hi\u1ebfm khi l\u00e0 b\u1ea3n cu\u1ed1i c\u00f9ng.<\/li>\n<\/ul>\n<h2>K\u1ebft lu\u1eadn v\u1ec1 t\u00ednh to\u00e0n v\u1eb9n c\u1ee7a h\u1ec7 th\u1ed1ng \u2705<\/h2>\n<p>Kh\u1eafc ph\u1ee5c s\u1ef1 c\u1ed1 trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u l\u00e0 k\u1ef9 n\u0103ng then ch\u1ed1t \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o \u0111\u1ed9 tin c\u1eady c\u1ee7a h\u1ec7 th\u1ed1ng. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 b\u1ed1n l\u1ed7i c\u01a1 b\u1ea3n, duy tr\u00ec s\u1ef1 nh\u1ea5t qu\u00e1n trong \u0111\u1eb7t t\u00ean v\u00e0 x\u00e1c minh theo c\u00e1c quy t\u1eafc kinh doanh, c\u00e1c chuy\u00ean vi\u00ean ph\u00e2n t\u00edch c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh v\u1eefng ch\u1eafc. Nh\u1eefng m\u00f4 h\u00ecnh n\u00e0y \u0111\u00f3ng vai tr\u00f2 nh\u01b0 b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n, \u0111\u1ea3m b\u1ea3o ph\u1ea7n m\u1ec1m cu\u1ed1i c\u00f9ng ho\u1ea1t \u0111\u1ed9ng \u0111\u00fang nh\u01b0 mong \u0111\u1ee3i.<\/p>\n<p>Vi\u1ec7c ki\u1ec3m tra \u0111\u1ecbnh k\u1ef3 v\u00e0 tu\u00e2n th\u1ee7 c\u00e1c quy t\u1eafc b\u1ea3o to\u00e0n d\u1eef li\u1ec7u s\u1ebd ng\u0103n ng\u1eeba c\u00e1c kho\u1ea3ng tr\u1ed1ng logic. H\u00e3y nh\u1edb r\u1eb1ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) kh\u00f4ng ch\u1ec9 l\u00e0 t\u00e0i li\u1ec7u k\u1ef9 thu\u1eadt m\u00e0 c\u00f2n l\u00e0 c\u00f4ng c\u1ee5 giao ti\u1ebfp. S\u1ef1 r\u00f5 r\u00e0ng cho ng\u01b0\u1eddi \u0111\u1ecdc quan tr\u1ecdng ngang b\u1eb1ng v\u1edbi \u0111\u1ed9 ch\u00ednh x\u00e1c cho m\u00e1y t\u00ednh.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u (DFD) \u0111\u00f3ng vai tr\u00f2 l\u00e0 c\u00f4ng c\u1ee5 n\u1ec1n t\u1ea3ng trong ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng. Ch\u00fang cung c\u1ea5p h\u00ecnh \u1ea3nh tr\u1ef1c quan v\u1ec1&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1785,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"Kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u & Gi\u1ea3i ph\u00e1p","_yoast_wpseo_metadesc":"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n \u0111\u1ec3 kh\u1eafc ph\u1ee5c c\u00e1c l\u1ed7i DFD nh\u01b0 h\u1ed1 \u0111en, ph\u00e9p m\u00e0u v\u00e0 d\u1eef li\u1ec7u treo. H\u1ecdc c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t trong m\u00f4 h\u00ecnh h\u00f3a ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[96],"tags":[89,95],"class_list":["post-1784","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-dfd","tag-academic","tag-dfd"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.1.1 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Kh\u1eafc ph\u1ee5c c\u00e1c v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn trong s\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1eef li\u1ec7u &amp; Gi\u1ea3i ph\u00e1p<\/title>\n<meta name=\"description\" content=\"H\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n \u0111\u1ec3 kh\u1eafc ph\u1ee5c c\u00e1c l\u1ed7i DFD nh\u01b0 h\u1ed1 \u0111en, ph\u00e9p m\u00e0u v\u00e0 d\u1eef li\u1ec7u treo. 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