{"id":1623,"date":"2026-03-30T01:26:38","date_gmt":"2026-03-30T01:26:38","guid":{"rendered":"https:\/\/www.go-diagram.com\/vi\/learning-use-case-diagrams-cs-students\/"},"modified":"2026-03-30T01:26:38","modified_gmt":"2026-03-30T01:26:38","slug":"learning-use-case-diagrams-cs-students","status":"publish","type":"post","link":"https:\/\/www.go-diagram.com\/vi\/learning-use-case-diagrams-cs-students\/","title":{"rendered":"H\u1ecdc s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: M\u1ed9t h\u00e0nh tr\u00ecnh c\u00f3 c\u1ea5u tr\u00fac d\u00e0nh cho sinh vi\u00ean ng\u00e0nh khoa h\u1ecdc m\u00e1y t\u00ednh"},"content":{"rendered":"<p>Hi\u1ec3u \u0111\u01b0\u1ee3c h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng n\u1ec1n t\u1ea3ng \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 sinh vi\u00ean khoa h\u1ecdc m\u00e1y t\u00ednh n\u00e0o. Trong s\u1ed1 c\u00e1c k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a kh\u00e1c nhau, s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng n\u1ed5i b\u1eadt nh\u01b0 m\u1ed9t c\u00f4ng c\u1ee5 ch\u00ednh \u0111\u1ec3 thu th\u1eadp c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng. Bi\u1ec3u di\u1ec5n tr\u1ef1c quan n\u00e0y t\u1ea1o c\u1ea7u n\u1ed1i gi\u1eefa nhu c\u1ea7u kinh doanh tr\u1eebu t\u01b0\u1ee3ng v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u1ee5 th\u1ec3. \u0110\u1ed1i v\u1edbi sinh vi\u00ean b\u01b0\u1edbc v\u00e0o l\u0129nh v\u1ef1c k\u1ef9 thu\u1eadt ph\u1ea7n m\u1ec1m, th\u00e0nh th\u1ea1o k\u00fd hi\u1ec7u n\u00e0y s\u1ebd mang l\u1ea1i s\u1ef1 r\u00f5 r\u00e0ng trong giao ti\u1ebfp v\u00e0 c\u1ea5u tr\u00fac trong qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n.<\/p>\n<p>H\u01b0\u1edbng d\u1eabn n\u00e0y n\u00eau r\u00f5 c\u00e1c th\u00e0nh ph\u1ea7n thi\u1ebft y\u1ebfu, m\u1ed1i quan h\u1ec7 v\u00e0 c\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t \u0111\u1ec3 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng hi\u1ec7u qu\u1ea3. Ch\u00fang ta s\u1ebd kh\u00e1m ph\u00e1 c\u00e1ch c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y ho\u1ea1t \u0111\u1ed9ng trong chu tr\u00ecnh ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m r\u1ed9ng l\u1edbn (SDLC) v\u00e0 cung c\u1ea5p c\u00e1c v\u00ed d\u1ee5 th\u1ef1c t\u1ebf \u0111\u1ec3 c\u1ee7ng c\u1ed1 vi\u1ec7c h\u1ecdc. \u0110\u1ebfn cu\u1ed1i t\u00e0i li\u1ec7u n\u00e0y, b\u1ea1n s\u1ebd c\u00f3 n\u1ec1n t\u1ea3ng v\u1eefng ch\u1eafc \u0111\u1ec3 \u00e1p d\u1ee5ng c\u00e1c kh\u00e1i ni\u1ec7m n\u00e0y v\u00e0o c\u00e1c d\u1ef1 \u00e1n h\u1ecdc thu\u1eadt v\u00e0 m\u00f4i tr\u01b0\u1eddng chuy\u00ean nghi\u1ec7p.<\/p>\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img alt=\"Whimsical educational infographic teaching computer science students how to create Use Case Diagrams, featuring playful stick-figure actors, colorful oval use cases inside a system boundary box, visual explanations of Association\/Include\/Extend\/Generalization relationships, a 5-step creation journey, and real-world examples for library and e-commerce systems\" decoding=\"async\" src=\"https:\/\/www.go-diagram.com\/wp-content\/uploads\/2026\/03\/whimsical-use-case-diagrams-infographic-computer-science-students.jpg\"\/><\/figure>\n<\/div>\n<h2>Hi\u1ec3u r\u00f5 m\u1ee5c \u0111\u00edch c\u1ed1t l\u00f5i c\u1ee7a s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \ud83c\udfaf<\/h2>\n<p>S\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 m\u1ed9t b\u1ea3n v\u1ebd; n\u00f3 l\u00e0 m\u1ed9t b\u1ea3n m\u00f4 t\u1ea3 v\u1ec1 t\u01b0\u01a1ng t\u00e1c. N\u00f3 tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi:<strong>Ai t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng, v\u00e0 h\u1ecd \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec1u g\u00ec?<\/strong>. Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 l\u1edbp t\u1eadp trung v\u00e0o c\u1ea5u tr\u00fac t\u0129nh, hay s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 t\u1eadp trung v\u00e0o h\u00e0nh vi \u0111\u1ed9ng theo th\u1eddi gian, s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng t\u1eadp trung v\u00e0o g\u00f3c nh\u00ecn b\u00ean ngo\u00e0i v\u1ec1 ch\u1ee9c n\u0103ng.<\/p>\n<p>C\u00e1c m\u1ee5c ti\u00eau ch\u00ednh bao g\u1ed3m:<\/p>\n<ul>\n<li><strong>Thu th\u1eadp y\u00eau c\u1ea7u:<\/strong>Thu th\u1eadp c\u00e1c nhu c\u1ea7u ch\u1ee9c n\u0103ng t\u1eeb c\u00e1c b\u00ean li\u00ean quan.<\/li>\n<li><strong>Giao ti\u1ebfp:<\/strong>Cung c\u1ea5p m\u1ed9t ng\u00f4n ng\u1eef tr\u1ef1c quan cho c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n v\u00e0 ng\u01b0\u1eddi d\u00f9ng kh\u00f4ng chuy\u00ean.<\/li>\n<li><strong>X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi:<\/strong>R\u00f5 r\u00e0ng \u0111\u00e1nh d\u1ea5u nh\u1eefng g\u00ec n\u1eb1m trong h\u1ec7 th\u1ed1ng so v\u1edbi nh\u1eefng g\u00ec v\u1eabn n\u1eb1m ngo\u00e0i h\u1ec7 th\u1ed1ng.<\/li>\n<li><strong>N\u1ec1n t\u1ea3ng ki\u1ec3m th\u1eed:<\/strong>L\u00e0m n\u1ec1n t\u1ea3ng \u0111\u1ec3 t\u1ea1o c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed nh\u1eb1m x\u00e1c minh h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<p>Sinh vi\u00ean th\u01b0\u1eddng nh\u1ea7m l\u1eabn c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y v\u1edbi s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3. \u0110i\u1ec1u quan tr\u1ecdng l\u00e0 ph\u1ea3i ph\u00e2n bi\u1ec7t r\u1eb1ng s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00f4ng th\u1ec3 hi\u1ec7n logic n\u1ed9i b\u1ed9 v\u1ec1 c\u00e1ch ho\u00e0n th\u00e0nh m\u1ed9t nhi\u1ec7m v\u1ee5. N\u00f3 ch\u1ec9 cho th\u1ea5y<em>r\u1eb1ng<\/em>m\u1ed9t nhi\u1ec7m v\u1ee5 c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c ho\u00e0n th\u00e0nh b\u1edfi m\u1ed9t t\u00e1c nh\u00e2n c\u1ee5 th\u1ec3.<\/p>\n<h2>C\u00e1c th\u00e0nh ph\u1ea7n c\u1ed1t l\u00f5i c\u1ee7a s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \ud83e\udde9<\/h2>\n<p>M\u1ed7i s\u01a1 \u0111\u1ed3 bao g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee5 th\u1ec3. Hi\u1ec3u r\u00f5 \u0111\u1ecbnh ngh\u0129a v\u00e0 c\u00e1ch bi\u1ec3u di\u1ec5n tr\u1ef1c quan c\u1ee7a t\u1eebng th\u00e0nh ph\u1ea7n l\u00e0 b\u01b0\u1edbc \u0111\u1ea7u ti\u00ean \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh x\u00e1c. Ch\u00fang ta s\u1ebd ph\u00e2n t\u00edch b\u1ed1n th\u00e0nh ph\u1ea7n ch\u00ednh: T\u00e1c nh\u00e2n, Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng, Bi\u00ean gi\u1edbi h\u1ec7 th\u1ed1ng v\u00e0 C\u00e1c m\u1ed1i quan h\u1ec7.<\/p>\n<h3>1. T\u00e1c nh\u00e2n \ud83d\udc64<\/h3>\n<p>M\u1ed9t t\u00e1c nh\u00e2n \u0111\u1ea1i di\u1ec7n cho m\u1ed9t vai tr\u00f2 do m\u1ed9t th\u1ef1c th\u1ec3 th\u1ef1c hi\u1ec7n khi t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u quan tr\u1ecdng c\u1ea7n nh\u1edb l\u00e0 m\u1ed9t t\u00e1c nh\u00e2n kh\u00f4ng nh\u1ea5t thi\u1ebft ph\u1ea3i l\u00e0 con ng\u01b0\u1eddi. C\u00e1c t\u00e1c nh\u00e2n c\u00f3 th\u1ec3 l\u00e0:<\/p>\n<ul>\n<li><strong>Ng\u01b0\u1eddi d\u00f9ng con ng\u01b0\u1eddi:<\/strong>Qu\u1ea3n tr\u1ecb vi\u00ean, kh\u00e1ch h\u00e0ng ho\u1eb7c qu\u1ea3n l\u00fd vi\u00ean.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng b\u00ean ngo\u00e0i:<\/strong>C\u00e1c \u1ee9ng d\u1ee5ng ph\u1ea7n m\u1ec1m kh\u00e1c cung c\u1ea5p d\u1eef li\u1ec7u ho\u1eb7c nh\u1eadn d\u1eef li\u1ec7u.<\/li>\n<li><strong>Thi\u1ebft b\u1ecb ph\u1ea7n c\u1ee9ng:<\/strong>C\u1ea3m bi\u1ebfn, m\u00e1y in ho\u1eb7c thi\u1ebft b\u1ecb thanh to\u00e1n.<\/li>\n<li><strong>S\u1ef1 ki\u1ec7n d\u1ef1a tr\u00ean th\u1eddi gian:<\/strong> C\u00e1c qu\u00e1 tr\u00ecnh \u0111\u01b0\u1ee3c l\u00ean l\u1ecbch th\u1ef1c hi\u1ec7n c\u00e1c h\u00e0nh \u0111\u1ed9ng b\u00ean trong h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<p>Bi\u1ec3u di\u1ec5n tr\u1ef1c quan:<\/p>\n<ul>\n<li>C\u00e1c t\u00e1c nh\u00e2n th\u01b0\u1eddng \u0111\u01b0\u1ee3c v\u1ebd d\u01b0\u1edbi d\u1ea1ng h\u00ecnh ng\u01b0\u1eddi b\u1eb1ng que.<\/li>\n<li>C\u00e1c nh\u00e3n \u0111\u01b0\u1ee3c \u0111\u1eb7t g\u1ea7n h\u00ecnh v\u1ebd \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh vai tr\u00f2.<\/li>\n<li>T\u00ean n\u00ean l\u00e0 danh t\u1eeb (v\u00ed d\u1ee5 nh\u01b0 <em>Sinh vi\u00ean<\/em>, <em>M\u00e1y ch\u1ee7<\/em>) thay v\u00ec \u0111\u1ed9ng t\u1eeb.<\/li>\n<\/ul>\n<h3>2. Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \ud83d\udd04<\/h3>\n<p>M\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u1ea1i di\u1ec7n cho m\u1ed9t m\u1ee5c ti\u00eau ho\u1eb7c ch\u1ee9c n\u0103ng c\u1ee5 th\u1ec3 m\u00e0 m\u1ed9t t\u00e1c nh\u00e2n mu\u1ed1n \u0111\u1ea1t \u0111\u01b0\u1ee3c. \u0110\u00f3 l\u00e0 m\u1ed9t \u0111\u01a1n v\u1ecb ch\u1ee9c n\u0103ng ri\u00eang bi\u1ec7t b\u00ean trong ranh gi\u1edbi h\u1ec7 th\u1ed1ng.<\/p>\n<ul>\n<li><strong>\u0110\u1ed9 chi ti\u1ebft:<\/strong> M\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng n\u00ean l\u00e0 nguy\u00ean t\u1eed. N\u00f3 kh\u00f4ng n\u00ean c\u1ed1 g\u1eafng l\u00e0m qu\u00e1 nhi\u1ec1u vi\u1ec7c. V\u00ed d\u1ee5, <em>\u0110\u1eb7t h\u00e0ng<\/em> t\u1ed1t h\u01a1n l\u00e0 <em>Qu\u1ea3n l\u00fd c\u1eeda h\u00e0ng<\/em>.<\/li>\n<li><strong>\u0110\u1ed9ng t\u1eeb:<\/strong> C\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111\u1eb7t t\u00ean theo c\u1ea5u tr\u00fac \u0111\u1ed9ng t\u1eeb-\u0111\u1ed1i t\u01b0\u1ee3ng (v\u00ed d\u1ee5 nh\u01b0 <em>Xem b\u00e1o c\u00e1o<\/em>, <em>C\u1eadp nh\u1eadt h\u1ed3 s\u01a1<\/em>).<\/li>\n<li><strong>Ranh gi\u1edbi:<\/strong> M\u1ed7i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ea3i n\u1eb1m b\u00ean trong ranh gi\u1edbi h\u1ec7 th\u1ed1ng \u0111\u1ec3 \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t ph\u1ea7n c\u1ee7a h\u1ec7 th\u1ed1ng.<\/li>\n<\/ul>\n<h3>3. Ranh gi\u1edbi h\u1ec7 th\u1ed1ng \ud83e\uddf1<\/h3>\n<p>Ranh gi\u1edbi h\u1ec7 th\u1ed1ng l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt bao quanh t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng. N\u00f3 x\u00e1c \u0111\u1ecbnh ph\u1ea1m vi c\u1ee7a d\u1ef1 \u00e1n. M\u1ecdi th\u1ee9 n\u1eb1m ngo\u00e0i khung n\u00e0y \u0111\u01b0\u1ee3c coi l\u00e0 b\u00ean ngo\u00e0i h\u1ec7 th\u1ed1ng.<\/p>\n<ul>\n<li><strong>R\u00f5 r\u00e0ng:<\/strong> \u0110i\u1ec1u n\u00e0y gi\u00fap ng\u0103n ch\u1eb7n hi\u1ec7n t\u01b0\u1ee3ng m\u1edf r\u1ed9ng ph\u1ea1m vi b\u1eb1ng c\u00e1ch hi\u1ec3n th\u1ecb r\u00f5 r\u00e0ng nh\u1eefng g\u00ec \u0111ang \u0111\u01b0\u1ee3c x\u00e2y d\u1ef1ng.<\/li>\n<li><strong>T\u01b0\u01a1ng t\u00e1c:<\/strong> Ch\u1ec9 c\u00e1c t\u00e1c nh\u00e2n v\u00e0 m\u1ed1i quan h\u1ec7 v\u01b0\u1ee3t qua ranh gi\u1edbi n\u00e0y l\u00e0 c\u00f3 li\u00ean quan \u0111\u1ebfn s\u01a1 \u0111\u1ed3.<\/li>\n<\/ul>\n<h3>4. M\u1ed1i quan h\u1ec7 \ud83d\udd17<\/h3>\n<p>C\u00e1c m\u1ed1i quan h\u1ec7 x\u00e1c \u0111\u1ecbnh c\u00e1ch c\u00e1c t\u00e1c nh\u00e2n v\u00e0 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng t\u01b0\u01a1ng t\u00e1c v\u1edbi nhau. C\u00f3 b\u1ed1n lo\u1ea1i m\u1ed1i quan h\u1ec7 ch\u00ednh \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong m\u00f4 h\u00ecnh h\u00f3a chu\u1ea9n:<\/p>\n<ol>\n<li><strong>Li\u00ean k\u1ebft:<\/strong> M\u1ed9t \u0111\u01b0\u1eddng n\u1ed1i gi\u1eefa m\u1ed9t t\u00e1c nh\u00e2n v\u00e0 m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/li>\n<li><strong>Bao g\u1ed3m:<\/strong>Vi\u1ec7c bao g\u1ed3m h\u00e0nh vi b\u1eaft bu\u1ed9c.<\/li>\n<li><strong>M\u1edf r\u1ed9ng:<\/strong>Vi\u1ec7c m\u1edf r\u1ed9ng h\u00e0nh vi t\u00f9y ch\u1ecdn.<\/li>\n<li><strong>T\u1ed5ng qu\u00e1t h\u00f3a:<\/strong>K\u1ebf th\u1eeba ho\u1eb7c chuy\u00ean bi\u1ec7t h\u00f3a.<\/li>\n<\/ol>\n<h2>Kh\u00e1m ph\u00e1 s\u00e2u v\u1ec1 c\u00e1c m\u1ed1i quan h\u1ec7 \ud83d\udd0d<\/h2>\n<p>Hi\u1ec3u r\u00f5 nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t gi\u1eefa c\u00e1c m\u1ed1i quan h\u1ec7 l\u00e0 \u0111i\u1ec1u c\u1ea7n thi\u1ebft \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a ch\u00ednh x\u00e1c. Vi\u1ec7c hi\u1ec3u sai nh\u1eefng \u0111i\u1ec3m n\u00e0y c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn logic h\u1ec7 th\u1ed1ng g\u00e2y nh\u1ea7m l\u1eabn. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y cung c\u1ea5p m\u1ed9t so s\u00e1nh c\u00f3 c\u1ea5u tr\u00fac gi\u1eefa c\u00e1c lo\u1ea1i m\u1ed1i quan h\u1ec7.<\/p>\n<table>\n<thead>\n<tr>\n<th>Lo\u1ea1i m\u1ed1i quan h\u1ec7<\/th>\n<th>K\u00fd hi\u1ec7u<\/th>\n<th>\u00dd ngh\u0129a<\/th>\n<th>V\u00ed d\u1ee5 t\u00ecnh hu\u1ed1ng<\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td><strong>Li\u00ean k\u1ebft<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng li\u1ec1n<\/td>\n<td>Giao ti\u1ebfp ho\u1eb7c t\u01b0\u01a1ng t\u00e1c tr\u1ef1c ti\u1ebfp gi\u1eefa t\u00e1c nh\u00e2n v\u00e0 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng.<\/td>\n<td>M\u1ed9t <em>Kh\u00e1ch h\u00e0ng<\/em> th\u1ef1c hi\u1ec7n <em>T\u00ecm ki\u1ebfm s\u1ea3n ph\u1ea9m<\/em>.<\/td>\n<\/tr>\n<tr>\n<td><strong>Bao g\u1ed3m<\/strong><\/td>\n<td>M\u0169i t\u00ean g\u1ea1ch n\u1ed1i k\u00e8m &lt;&lt;bao g\u1ed3m&gt;&gt;<\/td>\n<td>Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u01a1 s\u1edf <em>ph\u1ea3i<\/em>th\u1ef1c thi tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c bao g\u1ed3m. N\u00f3 \u0111\u1ea1i di\u1ec7n cho ch\u1ee9c n\u0103ng c\u00f3 th\u1ec3 t\u00e1i s\u1eed d\u1ee5ng.<\/td>\n<td><em>\u0110\u0103ng nh\u1eadp<\/em> lu\u00f4n bao g\u1ed3m <em>X\u00e1c th\u1ef1c th\u00f4ng tin \u0111\u0103ng nh\u1eadp<\/em>.<\/td>\n<\/tr>\n<tr>\n<td><strong>M\u1edf r\u1ed9ng<\/strong><\/td>\n<td>M\u0169i t\u00ean g\u1ea1ch n\u1ed1i v\u1edbi &lt;&lt;m\u1edf r\u1ed9ng&gt;&gt;<\/td>\n<td>C\u00e2u d\u00f9ng m\u1edf r\u1ed9ng th\u00eam ch\u1ee9c n\u0103ng v\u00e0o c\u00e2u d\u00f9ng c\u01a1 b\u1ea3n trong \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3. N\u00f3 l\u00e0 t\u00f9y ch\u1ecdn.<\/td>\n<td><em>T\u00ecm ki\u1ebfm s\u1ea3n ph\u1ea9m<\/em> c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c m\u1edf r\u1ed9ng b\u1edfi <em>Hi\u1ec3n th\u1ecb \u0111\u1ec1 xu\u1ea5t<\/em> n\u1ebfu ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 \u0111\u0103ng nh\u1eadp.<\/td>\n<\/tr>\n<tr>\n<td><strong>T\u1ed5ng qu\u00e1t h\u00f3a<\/strong><\/td>\n<td>\u0110\u01b0\u1eddng li\u1ec1n v\u1edbi tam gi\u00e1c r\u1ed7ng<\/td>\n<td>M\u1ed9t t\u00e1c nh\u00e2n ho\u1eb7c c\u00e2u d\u00f9ng chuy\u00ean bi\u1ec7t k\u1ebf th\u1eeba \u0111\u1eb7c \u0111i\u1ec3m t\u1eeb m\u1ed9t c\u00e1i t\u1ed5ng qu\u00e1t h\u01a1n.<\/td>\n<td><em>Qu\u1ea3n tr\u1ecb vi\u00ean<\/em> l\u00e0 m\u1ed9t lo\u1ea1i c\u1ee7a <em>Ng\u01b0\u1eddi d\u00f9ng<\/em>. <em>Thanh to\u00e1n tr\u1ef1c tuy\u1ebfn<\/em> l\u00e0 m\u1ed9t lo\u1ea1i c\u1ee7a <em>Thanh to\u00e1n<\/em>.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h3>Gi\u1ea3i th\u00edch s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa Include v\u00e0 Extend<\/h3>\n<p>Hai kh\u00e1i ni\u1ec7m n\u00e0y th\u01b0\u1eddng g\u00e2y nh\u1ea7m l\u1eabn. S\u1ef1 kh\u00e1c bi\u1ec7t n\u1eb1m \u1edf lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 t\u00ednh c\u1ea7n thi\u1ebft.<\/p>\n<p><strong>Bao g\u1ed3m (Th\u00ec <em>Ph\u1ea3i<\/em>):<\/strong><br \/>\nKhi C\u00e2u d\u00f9ng A bao g\u1ed3m C\u00e2u d\u00f9ng B, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 A kh\u00f4ng th\u1ec3 ho\u00e0n th\u00e0nh m\u00e0 kh\u00f4ng c\u00f3 B. B l\u00e0 m\u1ed9t b\u01b0\u1edbc ph\u1ee5 thu\u1ed9c c\u1ee7a A. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 tr\u00e1nh l\u1eb7p l\u1ea1i. N\u1ebfu n\u0103m c\u00e2u d\u00f9ng kh\u00e1c nhau \u0111\u1ec1u y\u00eau c\u1ea7u \u0111\u0103ng nh\u1eadp, b\u1ea1n t\u1ea1o ra m\u1ed9t c\u00e2u d\u00f9ng duy nh\u1ea5t <em>\u0110\u0103ng nh\u1eadp<\/em> c\u00e2u d\u00f9ng v\u00e0 bao g\u1ed3m n\u00f3 v\u00e0o t\u1ea5t c\u1ea3 ch\u00fang.<\/p>\n<p><strong>M\u1edf r\u1ed9ng (C\u00e1i <em>C\u00f3 th\u1ec3<\/em>):<\/strong><br \/>\nKhi Tr\u01b0\u1eddng h\u1ee3p S\u1eed d\u1ee5ng B m\u1edf r\u1ed9ng Tr\u01b0\u1eddng h\u1ee3p S\u1eed d\u1ee5ng A, \u0111i\u1ec1u \u0111\u00f3 c\u00f3 ngh\u0129a l\u00e0 B x\u1ea3y ra ch\u1ec9 khi m\u1ed9t \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3 \u0111\u01b0\u1ee3c \u0111\u00e1p \u1ee9ng. B kh\u00f4ng b\u1eaft bu\u1ed9c \u0111\u1ec3 A ho\u00e0n th\u00e0nh. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng cho c\u00e1c lu\u1ed3ng thay th\u1ebf. V\u00ed d\u1ee5, h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 m\u1edf r\u1ed9ng qu\u00e1 tr\u00ecnh <em>Thanh to\u00e1n<\/em> qu\u00e1 tr\u00ecnh v\u1edbi <em>\u00c1p d\u1ee5ng M\u00e3 gi\u1ea3m gi\u00e1<\/em> ch\u1ec9 khi ng\u01b0\u1eddi d\u00f9ng nh\u1eadp m\u00e3.<\/p>\n<h2>X\u00e2y d\u1ef1ng s\u01a1 \u0111\u1ed3 t\u1eebng b\u01b0\u1edbc \ud83d\udee0\ufe0f<\/h2>\n<p>T\u1ea1o s\u01a1 \u0111\u1ed3 m\u00e0 kh\u00f4ng c\u00f3 k\u1ebf ho\u1ea1ch th\u01b0\u1eddng d\u1eabn \u0111\u1ebfn h\u1ed7n lo\u1ea1n. H\u00e3y tu\u00e2n theo c\u00e1ch ti\u1ebfp c\u1eadn c\u00f3 c\u1ea5u tr\u00fac n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 r\u00f5 r\u00e0ng.<\/p>\n<h3>B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh ph\u1ea1m vi h\u1ec7 th\u1ed1ng<\/h3>\n<p>Tr\u01b0\u1edbc khi v\u1ebd b\u1ea5t c\u1ee9 \u0111i\u1ec1u g\u00ec, h\u00e3y x\u00e1c \u0111\u1ecbnh ranh gi\u1edbi. M\u1ee5c \u0111\u00edch ch\u00ednh c\u1ee7a ph\u1ea7n m\u1ec1m l\u00e0 g\u00ec? C\u00f3 ph\u1ea3i l\u00e0 h\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd th\u01b0 vi\u1ec7n? M\u1ed9t c\u1ed5ng ng\u00e2n h\u00e0ng? Vi\u1ebft ra m\u1ed9t \u0111\u1ecbnh ngh\u0129a b\u1eb1ng m\u1ed9t c\u00e2u v\u1ec1 h\u1ec7 th\u1ed1ng. \u0110i\u1ec1u n\u00e0y gi\u00fap b\u1ea1n quy\u1ebft \u0111\u1ecbnh nh\u1eefng g\u00ec thu\u1ed9c v\u1ec1 b\u00ean trong khung h\u00ecnh.<\/p>\n<h3>B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh c\u00e1c t\u00e1c nh\u00e2n<\/h3>\n<p>Li\u1ec7t k\u00ea m\u1ecdi vai tr\u00f2 t\u01b0\u01a1ng t\u00e1c v\u1edbi h\u1ec7 th\u1ed1ng. \u0110\u1eb7t c\u00e1c c\u00e2u h\u1ecfi nh\u01b0:<\/p>\n<ul>\n<li>Ai kh\u1edfi t\u1ea1o qu\u00e1 tr\u00ecnh?<\/li>\n<li>Ai nh\u1eadn \u0111\u1ea7u ra?<\/li>\n<li>C\u00f3 h\u1ec7 th\u1ed1ng t\u1ef1 \u0111\u1ed9ng n\u00e0o tham gia kh\u00f4ng?<\/li>\n<\/ul>\n<p>V\u1ebd c\u00e1c h\u00ecnh ng\u01b0\u1eddi que v\u00e0 g\u00e1n nh\u00e3n cho ch\u00fang. Tr\u00e1nh gom c\u00e1c vai tr\u00f2 kh\u00e1c nhau d\u01b0\u1edbi nh\u1eefng t\u00ean chung chung nh\u01b0 <em>Ng\u01b0\u1eddi d\u00f9ng<\/em>tr\u1eeb khi ch\u00fang c\u00f3 quy\u1ec1n truy c\u1eadp gi\u1ed1ng nhau.<\/p>\n<h3>B\u01b0\u1edbc 3: X\u00e1c \u0111\u1ecbnh c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng<\/h3>\n<p>V\u1edbi m\u1ed7i t\u00e1c nh\u00e2n, x\u00e1c \u0111\u1ecbnh h\u1ecd mu\u1ed1n l\u00e0m g\u00ec. S\u1eed d\u1ee5ng \u0111\u1ecbnh d\u1ea1ng \u0111\u1ed9ng t\u1eeb-\u0111\u1ed1i t\u01b0\u1ee3ng. Gi\u1eef danh s\u00e1ch t\u1eadp trung v\u00e0o c\u00e1c m\u1ee5c ti\u00eau c\u1ea5p cao thay v\u00ec c\u00e1c thao t\u00e1c nh\u1ea5p m\u00e0n h\u00ecnh c\u1ee5 th\u1ec3.<\/p>\n<ul>\n<li><em>X\u1ea5u:<\/em> Nh\u1ea5p n\u00fat G\u1eedi<\/li>\n<li><em>T\u1ed1t:<\/em> G\u1eedi \u0111\u01a1n \u0111\u0103ng k\u00fd<\/li>\n<\/ul>\n<h3>B\u01b0\u1edbc 4: V\u1ebd c\u00e1c m\u1ed1i quan h\u1ec7<\/h3>\n<p>K\u1ebft n\u1ed1i c\u00e1c t\u00e1c nh\u00e2n v\u1edbi c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u00f9 h\u1ee3p. S\u1eed d\u1ee5ng \u0111\u01b0\u1eddng li\u1ec1n cho c\u00e1c t\u01b0\u01a1ng t\u00e1c c\u01a1 b\u1ea3n. Sau \u0111\u00f3, ph\u00e2n t\u00edch xem c\u00f3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng n\u00e0o chia s\u1ebb c\u00e1c quy tr\u00ecnh con chung (Include) ho\u1eb7c c\u00f3 bi\u1ebfn th\u1ec3 \u0111i\u1ec1u ki\u1ec7n (Extend) hay kh\u00f4ng.<\/p>\n<h3>B\u01b0\u1edbc 5: Xem x\u00e9t v\u00e0 ho\u00e0n thi\u1ec7n<\/h3>\n<p>Ki\u1ec3m tra c\u00e1c t\u00e1c nh\u00e2n b\u1ecb b\u1ecf r\u01a1i (c\u00e1c t\u00e1c nh\u00e2n kh\u00f4ng c\u00f3 k\u1ebft n\u1ed1i) ho\u1eb7c c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng b\u1ecb b\u1ecf r\u01a1i (c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00f4ng c\u00f3 t\u00e1c nh\u00e2n). M\u1ed9t s\u01a1 \u0111\u1ed3 ph\u1ea3i ho\u1ea1t \u0111\u1ed9ng v\u00e0 c\u00f3 li\u00ean k\u1ebft ch\u1eb7t ch\u1ebd.<\/p>\n<h2>Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn c\u1ea7n tr\u00e1nh \u26a0\ufe0f<\/h2>\n<p>Ngay c\u1ea3 nh\u1eefng ng\u01b0\u1eddi c\u00f3 kinh nghi\u1ec7m c\u0169ng m\u1eafc sai l\u1ea7m khi l\u1ea7n \u0111\u1ea7u h\u1ecdc c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y. Nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng \u0111i\u1ec3m sai n\u00e0y s\u1ebd gi\u00fap b\u1ea1n t\u1ea1o ra c\u00e1c m\u00f4 h\u00ecnh s\u1ea1ch h\u01a1n.<\/p>\n<h3>1. Tr\u1ed9n l\u1eabn c\u00e1c m\u1ee9c \u0111\u1ed9 tr\u1eebu t\u01b0\u1ee3ng<\/h3>\n<p>Kh\u00f4ng tr\u1ed9n l\u1eabn c\u00e1c m\u1ee5c ti\u00eau c\u1ea5p cao v\u1edbi chi ti\u1ebft tri\u1ec3n khai c\u1ea5p th\u1ea5p. M\u1ed9t s\u01a1 \u0111\u1ed3 n\u00ean th\u1ec3 hi\u1ec7n<em>\u0111i\u1ec1u g\u00ec<\/em>h\u1ec7 th\u1ed1ng l\u00e0m, ch\u1ee9 kh\u00f4ng ph\u1ea3i<em>c\u00e1ch<\/em>n\u00f3 th\u1ef1c hi\u1ec7n nh\u01b0 th\u1ebf n\u00e0o. Tr\u00e1nh hi\u1ec3n th\u1ecb c\u00e1c truy v\u1ea5n c\u01a1 s\u1edf d\u1eef li\u1ec7u n\u1ed9i b\u1ed9 ho\u1eb7c c\u00e1c thao t\u00e1c nh\u1ea5p n\u00fat giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng c\u1ee5 th\u1ec3.<\/p>\n<h3>2. L\u1ea1m d\u1ee5ng c\u00e1c m\u1ed1i quan h\u1ec7 Include v\u00e0 Extend<\/h3>\n<p>M\u1eb7c d\u00f9 h\u1eefu \u00edch, nh\u01b0ng l\u1ea1m d\u1ee5ng c\u00e1c m\u1ed1i quan h\u1ec7 n\u00e0y s\u1ebd khi\u1ebfn s\u01a1 \u0111\u1ed3 kh\u00f3 \u0111\u1ecdc. N\u1ebfu m\u1ed9t quy tr\u00ecnh con c\u1ef1c k\u1ef3 \u0111\u01a1n gi\u1ea3n, h\u00e3y c\u00e2n nh\u1eafc nh\u00fang m\u00f4 t\u1ea3 v\u00e0o v\u0103n b\u1ea3n thay v\u00ec v\u1ebd m\u1ed9t h\u1ed9p ri\u00eang bi\u1ec7t.<\/p>\n<h3>3. T\u00ean ng\u01b0\u1eddi tham gia m\u01a1 h\u1ed3<\/h3>\n<p>S\u1eed d\u1ee5ng t\u00ean nh\u01b0<em>Ng\u01b0\u1eddi d\u00f9ng<\/em> ho\u1eb7c<em>H\u1ec7 th\u1ed1ng<\/em>th\u01b0\u1eddng qu\u00e1 chung chung. Ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c vai tr\u00f2. \u0110\u1ed1i v\u1edbi \u1ee9ng d\u1ee5ng ng\u00e2n h\u00e0ng, h\u00e3y ph\u00e2n bi\u1ec7t gi\u1eefa<em>Ch\u1ee7 t\u00e0i kho\u1ea3n<\/em>, <em>Qu\u1ea3n l\u00fd ng\u00e2n h\u00e0ng<\/em>, v\u00e0<em>M\u1ea1ng ATM<\/em>.<\/p>\n<h3>4. B\u1ecf qua ranh gi\u1edbi h\u1ec7 th\u1ed1ng<\/h3>\n<p>Vi\u1ec7c \u0111\u1eb7t c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng b\u00ean ngo\u00e0i ranh gi\u1edbi ng\u1ee5 \u00fd ch\u00fang n\u1eb1m ngo\u00e0i h\u1ec7 th\u1ed1ng, \u0111i\u1ec1u n\u00e0y g\u00e2y nh\u1ea7m l\u1eabn. \u0110\u1ea3m b\u1ea3o t\u1ea5t c\u1ea3 c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng \u0111\u1ec1u \u0111\u01b0\u1ee3c bao b\u1ecdc b\u00ean trong.<\/p>\n<h2>V\u00ed d\u1ee5 \u1ee9ng d\u1ee5ng th\u1ef1c t\u1ebf \ud83c\udfe2<\/h2>\n<p>\u0110\u1ec3 c\u1ee7ng c\u1ed1 hi\u1ec3u bi\u1ebft, h\u00e3y c\u00f9ng xem c\u00e1ch c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u01b0\u1ee3c \u00e1p d\u1ee5ng v\u00e0o c\u00e1c t\u00ecnh hu\u1ed1ng kh\u00e1c nhau. Ch\u00fang ta s\u1ebd m\u00f4 t\u1ea3 c\u00e1c th\u00e0nh ph\u1ea7n m\u00e0 kh\u00f4ng ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c c\u00f4ng c\u1ee5 ph\u1ea7n m\u1ec1m c\u1ee5 th\u1ec3.<\/p>\n<h3>V\u00ed d\u1ee5 1: H\u1ec7 th\u1ed1ng qu\u1ea3n l\u00fd th\u01b0 vi\u1ec7n<\/h3>\n<p><strong>Ng\u01b0\u1eddi tham gia:<\/strong> Th\u00e0nh vi\u00ean, Nh\u00e2n vi\u00ean th\u01b0 vi\u1ec7n, H\u1ec7 th\u1ed1ng.<\/p>\n<ul>\n<li><strong>Th\u00e0nh vi\u00ean:<\/strong> M\u01b0\u1ee3n s\u00e1ch, Tr\u1ea3 s\u00e1ch, Gia h\u1ea1n s\u00e1ch, T\u00ecm ki\u1ebfm danh m\u1ee5c.<\/li>\n<li><strong>Th\u1ee7 th\u01b0:<\/strong> Th\u00eam s\u00e1ch, X\u00f3a s\u00e1ch, Qu\u1ea3n l\u00fd th\u00e0nh vi\u00ean, T\u1ea1o b\u00e1o c\u00e1o.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng:<\/strong> G\u1eedi th\u00f4ng b\u00e1o qu\u00e1 h\u1ea1n (t\u00e1c nh\u00e2n d\u1ef1a tr\u00ean th\u1eddi gian).<\/li>\n<\/ul>\n<p><strong>M\u1ed1i quan h\u1ec7:<\/strong>C\u00e1i <em>T\u1ea1o b\u00e1o c\u00e1o<\/em> tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u00f3 th\u1ec3 bao g\u1ed3m <em>T\u00ednh ph\u00ed ph\u1ea1t<\/em> nh\u01b0 m\u1ed9t b\u01b0\u1edbc b\u1eaft bu\u1ed9c.<\/p>\n<h3>V\u00ed d\u1ee5 2: N\u1ec1n t\u1ea3ng th\u01b0\u01a1ng m\u1ea1i \u0111i\u1ec7n t\u1eed<\/h3>\n<p><strong>C\u00e1c t\u00e1c nh\u00e2n:<\/strong> Kh\u00e1ch h\u00e0ng, C\u1ed5ng thanh to\u00e1n, H\u1ec7 th\u1ed1ng kho h\u00e0ng.<\/p>\n<ul>\n<li><strong>Kh\u00e1ch h\u00e0ng:<\/strong> Xem s\u1ea3n ph\u1ea9m, Th\u00eam v\u00e0o gi\u1ecf h\u00e0ng, Thanh to\u00e1n, \u0110\u00e1nh gi\u00e1 s\u1ea3n ph\u1ea9m.<\/li>\n<li><strong>C\u1ed5ng thanh to\u00e1n:<\/strong> X\u1eed l\u00fd thanh to\u00e1n.<\/li>\n<li><strong>H\u1ec7 th\u1ed1ng kho h\u00e0ng:<\/strong> C\u1eadp nh\u1eadt t\u1ed3n kho.<\/li>\n<\/ul>\n<p><strong>M\u1ed1i quan h\u1ec7:<\/strong> <em>Thanh to\u00e1n<\/em> m\u1edf r\u1ed9ng th\u00e0nh <em>\u00c1p d\u1ee5ng \u0111i\u1ec3m t\u00edch l\u0169y<\/em> n\u1ebfu kh\u00e1ch h\u00e0ng l\u00e0 th\u00e0nh vi\u00ean VIP.<em>Thanh to\u00e1n<\/em> bao g\u1ed3m <em>X\u00e1c th\u1ef1c th\u1ebb<\/em>.<\/p>\n<h2>T\u00edch h\u1ee3p v\u00e0o Chu tr\u00ecnh ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m (SDLC) \ud83d\udd04<\/h2>\n<p>C\u00e1c s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00f4ng \u0111\u01b0\u1ee3c t\u1ea1o ri\u00eang l\u1ebb. Ch\u00fang ph\u00f9 h\u1ee3p v\u1edbi c\u00e1c giai \u0111o\u1ea1n c\u1ee5 th\u1ec3 c\u1ee7a qu\u00e1 tr\u00ecnh ph\u00e1t tri\u1ec3n.<\/p>\n<ul>\n<li><strong>Thu th\u1eadp y\u00eau c\u1ea7u:<\/strong> S\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c ph\u00e1c th\u1ea3o trong c\u00e1c cu\u1ed9c h\u1ecdp v\u1edbi c\u00e1c b\u00ean li\u00ean quan \u0111\u1ec3 x\u00e1c nh\u1eadn s\u1ef1 hi\u1ec3u bi\u1ebft.<\/li>\n<li><strong>Ph\u00e2n t\u00edch:<\/strong> C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n xem x\u00e9t s\u01a1 \u0111\u1ed3 \u0111\u1ec3 x\u00e1c \u0111\u1ecbnh c\u00e1c th\u1ef1c th\u1ec3 d\u1eef li\u1ec7u ti\u1ec1m n\u0103ng v\u00e0 lu\u1ed3ng logic.<\/li>\n<li><strong>Thi\u1ebft k\u1ebf:<\/strong> S\u01a1 \u0111\u1ed3 n\u00e0y \u0111\u1ecbnh h\u01b0\u1edbng ki\u1ebfn tr\u00fac. N\u1ebfu m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng ph\u1ee9c t\u1ea1p, n\u00f3 c\u00f3 th\u1ec3 y\u00eau c\u1ea7u m\u1ed9t s\u01a1 \u0111\u1ed3 tu\u1ea7n t\u1ef1 chi ti\u1ebft.<\/li>\n<li><strong>Ki\u1ec3m th\u1eed:<\/strong> C\u00e1c tester s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 \u0111\u1ec3 suy ra c\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed. N\u1ebfu m\u1ed9t tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng l\u00e0 <em>\u0110\u1eb7t l\u1ea1i m\u1eadt kh\u1ea9u<\/em>, b\u1ed9 ki\u1ec3m th\u1eed ph\u1ea3i bao g\u1ed3m c\u1ea3 c\u00e1c t\u00ecnh hu\u1ed1ng h\u1ee3p l\u1ec7 v\u00e0 kh\u00f4ng h\u1ee3p l\u1ec7.<\/li>\n<li><strong>B\u1ea3o tr\u00ec:<\/strong> Khi c\u00e1c t\u00ednh n\u0103ng \u0111\u01b0\u1ee3c th\u00eam v\u00e0o, s\u01a1 \u0111\u1ed3 \u0111\u01b0\u1ee3c c\u1eadp nh\u1eadt \u0111\u1ec3 ph\u1ea3n \u00e1nh ph\u1ea1m vi m\u1edbi.<\/li>\n<\/ul>\n<h2>Chuy\u1ec3n \u0111\u1ed5i t\u1eeb s\u01a1 \u0111\u1ed3 sang tri\u1ec3n khai \ud83d\udcbb<\/h2>\n<p>L\u00e0m th\u1ebf n\u00e0o \u0111\u1ec3 chuy\u1ec3n t\u1eeb m\u00f4 h\u00ecnh tr\u1ef1c quan n\u00e0y sang m\u00e3 th\u1ef1c t\u1ebf? S\u01a1 \u0111\u1ed3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 m\u1ed9t h\u1ee3p \u0111\u1ed3ng.<\/p>\n<ol>\n<li><strong>\u00c1nh x\u1ea1 ch\u1ee9c n\u0103ng:<\/strong> M\u1ed7i tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng \u0111\u01b0\u1ee3c \u00e1nh x\u1ea1 sang m\u1ed9t ph\u01b0\u01a1ng th\u1ee9c ho\u1eb7c m\u1ed9t d\u1ecbch v\u1ee5 trong c\u01a1 s\u1edf m\u00e3 ngu\u1ed3n.<\/li>\n<li><strong>\u0110\u1ecbnh ngh\u0129a giao di\u1ec7n:<\/strong> C\u00e1c t\u00e1c nh\u00e2n th\u01b0\u1eddng x\u00e1c \u0111\u1ecbnh c\u00e1c \u0111i\u1ec3m cu\u1ed1i API. M\u1ed9t t\u00e1c nh\u00e2n con ng\u01b0\u1eddi \u0111\u1ea1i di\u1ec7n cho giao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng ph\u00eda tr\u01b0\u1edbc, trong khi m\u1ed9t t\u00e1c nh\u00e2n h\u1ec7 th\u1ed1ng \u0111\u1ea1i di\u1ec7n cho m\u1ed9t \u0111i\u1ec3m cu\u1ed1i API.<\/li>\n<li><strong>Logic x\u00e1c th\u1ef1c:<\/strong> C\u00e1c <em>Include<\/em> c\u00e1c m\u1ed1i quan h\u1ec7 th\u01b0\u1eddng \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh c\u00e1c h\u00e0m tr\u1ee3 gi\u00fap ho\u1eb7c middleware.<\/li>\n<li><strong>Logic \u0111i\u1ec1u ki\u1ec7n:<\/strong> C\u00e1c <em>Extend<\/em> c\u00e1c m\u1ed1i quan h\u1ec7 \u0111\u01b0\u1ee3c chuy\u1ec3n \u0111\u1ed5i th\u00e0nh c\u00e1c c\u00e2u l\u1ec7nh \u0111i\u1ec1u ki\u1ec7n (if-else) trong lu\u1ed3ng c\u00f4ng vi\u1ec7c ch\u00ednh.<\/li>\n<\/ol>\n<h2>B\u1ea3ng ki\u1ec3m t\u1ef1 \u0111\u00e1nh gi\u00e1 \u2705<\/h2>\n<p>Tr\u01b0\u1edbc khi ho\u00e0n t\u1ea5t s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n, h\u00e3y \u0111i qua danh s\u00e1ch ki\u1ec3m tra n\u00e0y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o ch\u1ea5t l\u01b0\u1ee3ng.<\/p>\n<ul>\n<li>T\u1ea5t c\u1ea3 c\u00e1c t\u00e1c nh\u00e2n c\u00f3 \u0111\u01b0\u1ee3c g\u00e1n nh\u00e3n r\u00f5 r\u00e0ng b\u1eb1ng danh t\u1eeb kh\u00f4ng?<\/li>\n<li>T\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng c\u00f3 \u0111\u01b0\u1ee3c \u0111\u00e1nh nh\u00e3n b\u1eb1ng c\u1ee5m t\u1eeb \u0111\u1ed9ng t\u1eeb-\u0111\u1ed1i t\u01b0\u1ee3ng kh\u00f4ng?<\/li>\n<li>Bi\u00ean gi\u1edbi h\u1ec7 th\u1ed1ng c\u00f3 \u0111\u01b0\u1ee3c v\u1ebd r\u00f5 r\u00e0ng v\u00e0 bao quanh t\u1ea5t c\u1ea3 c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng kh\u00f4ng?<\/li>\n<li>C\u00f3 b\u1ea5t k\u1ef3 ng\u01b0\u1eddi d\u00f9ng n\u00e0o ho\u1eb7c c\u00e1c tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng n\u00e0o kh\u00f4ng \u0111\u01b0\u1ee3c k\u1ebft n\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 th\u1ee9 g\u00ec kh\u00f4ng?<\/li>\n<li>S\u1ef1 ph\u00e2n bi\u1ec7t gi\u1eefa Include v\u00e0 Extend c\u00f3 r\u00f5 r\u00e0ng kh\u00f4ng?<\/li>\n<li>S\u01a1 \u0111\u1ed3 c\u00f3 \u0111\u1ea1i di\u1ec7n ch\u00ednh x\u00e1c c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng kh\u00f4ng?<\/li>\n<li>M\u1ee9c \u0111\u1ed9 chi ti\u1ebft c\u00f3 ph\u00f9 h\u1ee3p v\u1edbi ph\u1ea1m vi d\u1ef1 \u00e1n kh\u00f4ng?<\/li>\n<\/ul>\n<h2>Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 m\u00f4 h\u00ecnh h\u00f3a h\u1ec7 th\u1ed1ng \ud83c\udf1f<\/h2>\n<p>Vi\u1ec7c t\u1ea1o s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng l\u00e0 m\u1ed9t b\u00e0i t\u1eadp v\u1ec1 s\u1ef1 r\u00f5 r\u00e0ng. N\u00f3 bu\u1ed9c b\u1ea1n ph\u1ea3i suy ngh\u0129 v\u1ec1 h\u1ec7 th\u1ed1ng t\u1eeb g\u00f3c nh\u00ecn c\u1ee7a ng\u01b0\u1eddi d\u00f9ng v\u00e0 m\u00f4i tr\u01b0\u1eddng xung quanh. \u0110\u1ed1i v\u1edbi sinh vi\u00ean ng\u00e0nh khoa h\u1ecdc m\u00e1y t\u00ednh, k\u1ef9 n\u0103ng n\u00e0y r\u1ea5t quan tr\u1ecdng \u0111\u1ec3 s\u1eafp x\u1ebfp suy ngh\u0129 tr\u01b0\u1edbc khi vi\u1ebft b\u1ea5t k\u1ef3 d\u00f2ng m\u00e3 n\u00e0o. N\u00f3 gi\u00fap ng\u0103n ch\u1eb7n v\u1ea5n \u0111\u1ec1 ph\u1ed5 bi\u1ebfn l\u00e0 x\u00e2y d\u1ef1ng c\u00e1c t\u00ednh n\u0103ng kh\u00f4ng gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c c\u00e1c v\u1ea5n \u0111\u1ec1 th\u1ef1c t\u1ebf.<\/p>\n<p>B\u1eb1ng c\u00e1ch tu\u00e2n theo c\u00e1c con \u0111\u01b0\u1eddng c\u00f3 c\u1ea5u tr\u00fac, tr\u00e1nh nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn v\u00e0 hi\u1ec3u r\u00f5 m\u1ed1i quan h\u1ec7 gi\u1eefa c\u00e1c th\u00e0nh ph\u1ea7n, b\u1ea1n c\u00f3 th\u1ec3 t\u1ea1o ra c\u00e1c s\u01a1 \u0111\u1ed3 \u0111\u00f3ng vai tr\u00f2 nh\u01b0 b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf hi\u1ec7u qu\u1ea3. H\u00e3y nh\u1edb r\u1eb1ng c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y l\u00e0 t\u00e0i li\u1ec7u s\u1ed1ng. Ch\u00fang n\u00ean thay \u0111\u1ed5i theo th\u1eddi gian khi hi\u1ec3u bi\u1ebft v\u1ec1 h\u1ec7 th\u1ed1ng ng\u00e0y c\u00e0ng s\u00e2u s\u1eafc h\u01a1n. Vi\u1ec7c luy\u1ec7n t\u1eadp \u0111\u1ec1u \u0111\u1eb7n theo nh\u1eefng nguy\u00ean t\u1eafc n\u00e0y s\u1ebd d\u1eabn \u0111\u1ebfn c\u00e1c thi\u1ebft k\u1ebf ph\u1ea7n m\u1ec1m v\u1eefng ch\u1eafc h\u01a1n v\u00e0 giao ti\u1ebfp r\u00f5 r\u00e0ng h\u01a1n v\u1edbi \u0111\u1ed9i nh\u00f3m c\u1ee7a b\u1ea1n.<\/p>\n<p>T\u1eadp trung v\u00e0o <em>\u0111i\u1ec1u g\u00ec<\/em> v\u00e0 <em>ai<\/em>. Vi\u1ec7c <em>l\u00e0m th\u1ebf n\u00e0o<\/em>s\u1ebd \u0111\u1ebfn sau trong giai \u0111o\u1ea1n tri\u1ec3n khai. Gi\u1eef cho s\u01a1 \u0111\u1ed3 c\u1ee7a b\u1ea1n s\u1ea1ch s\u1ebd, c\u00e1c t\u00e1c nh\u00e2n c\u1ee5 th\u1ec3 v\u00e0 c\u00e1c bi\u00ean gi\u1edbi r\u00f5 r\u00e0ng. K\u1ef7 lu\u1eadt n\u00e0y s\u1ebd ph\u1ee5c v\u1ee5 b\u1ea1n r\u1ea5t t\u1ed1t trong su\u1ed1t s\u1ef1 nghi\u1ec7p k\u1ef9 thu\u1eadt c\u1ee7a b\u1ea1n.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hi\u1ec3u \u0111\u01b0\u1ee3c h\u00e0nh vi c\u1ee7a h\u1ec7 th\u1ed1ng l\u00e0 m\u1ed9t k\u1ef9 n\u0103ng n\u1ec1n t\u1ea3ng \u0111\u1ed1i v\u1edbi b\u1ea5t k\u1ef3 sinh vi\u00ean khoa h\u1ecdc m\u00e1y t\u00ednh n\u00e0o. Trong s\u1ed1 c\u00e1c k\u1ef9 thu\u1eadt m\u00f4&hellip;<\/p>\n","protected":false},"author":1,"featured_media":1624,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"H\u1ecdc s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng: M\u1ed9t h\u01b0\u1edbng d\u1eabn d\u00e0nh cho sinh vi\u00ean ng\u00e0nh Khoa h\u1ecdc m\u00e1y t\u00ednh \ud83c\udf93","_yoast_wpseo_metadesc":"M\u1ed9t h\u01b0\u1edbng d\u1eabn to\u00e0n di\u1ec7n \u0111\u1ec3 hi\u1ec3u s\u01a1 \u0111\u1ed3 tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng. 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