{"id":777,"date":"2026-03-26T02:31:16","date_gmt":"2026-03-26T02:31:16","guid":{"rendered":"https:\/\/www.visualize-ai.com\/vi\/state-diagrams-vs-flowcharts-systems-analysis\/"},"modified":"2026-03-26T02:31:16","modified_gmt":"2026-03-26T02:31:16","slug":"state-diagrams-vs-flowcharts-systems-analysis","status":"publish","type":"post","link":"https:\/\/www.visualize-ai.com\/vi\/state-diagrams-vs-flowcharts-systems-analysis\/","title":{"rendered":"S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i so v\u1edbi s\u01a1 \u0111\u1ed3 lu\u1ed3ng: Nh\u1eefng \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh d\u00e0nh cho sinh vi\u00ean ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng"},"content":{"rendered":"

Ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan \u0111\u1ec3 truy\u1ec1n \u0111\u1ea1t logic ph\u1ee9c t\u1ea1p \u0111\u1ebfn c\u00e1c b\u00ean li\u00ean quan v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n. Tuy nhi\u00ean, m\u1ed9t \u0111i\u1ec3m g\u00e2y nh\u1ea7m l\u1eabn ph\u1ed5 bi\u1ebfn \u0111\u1ed1i v\u1edbi sinh vi\u00ean m\u1edbi b\u01b0\u1edbc v\u00e0o l\u0129nh v\u1ef1c n\u00e0y l\u00e0 s\u1ef1 kh\u00e1c bi\u1ec7t gi\u1eefa s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng. C\u1ea3 hai \u0111\u1ec1u l\u00e0 c\u00e1c bi\u1ec3u di\u1ec5n \u0111\u1ed3 h\u1ecda d\u00f9ng \u0111\u1ec3 m\u00f4 h\u00ecnh h\u00f3a quy tr\u00ecnh, nh\u01b0ng ch\u00fang ph\u1ee5c v\u1ee5 nh\u1eefng m\u1ee5c \u0111\u00edch c\u0103n b\u1ea3n kh\u00e1c nhau trong ki\u1ebfn tr\u00fac c\u1ee7a m\u1ed9t h\u1ec7 th\u1ed1ng ph\u1ea7n m\u1ec1m. Hi\u1ec3u r\u00f5 khi n\u00e0o n\u00ean \u00e1p d\u1ee5ng s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i thay v\u00ec s\u01a1 \u0111\u1ed3 lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n l\u00e0 \u0111i\u1ec1u then ch\u1ed1t cho vi\u1ec7c thu th\u1eadp y\u00eau c\u1ea7u ch\u00ednh x\u00e1c v\u00e0 thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng hi\u1ec7u qu\u1ea3.<\/p>\n

H\u01b0\u1edbng d\u1eabn n\u00e0y kh\u00e1m ph\u00e1 s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u1ea5u tr\u00fac v\u00e0 ch\u1ee9c n\u0103ng gi\u1eefa hai k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a n\u00e0y. Ch\u00fang ta s\u1ebd xem x\u00e9t c\u00e1ch ch\u00fang x\u1eed l\u00fd d\u1eef li\u1ec7u, s\u1ef1 ki\u1ec7n v\u00e0 logic \u0111i\u1ec1u khi\u1ec3n, \u0111\u1ea3m b\u1ea3o b\u1ea1n x\u00e2y d\u1ef1ng \u0111\u01b0\u1ee3c c\u00e1c m\u00f4 h\u00ecnh v\u1eefng ch\u1eafc ph\u1ea3n \u00e1nh \u0111\u00fang h\u00e0nh vi th\u1ef1c t\u1ebf c\u1ee7a c\u00e1c h\u1ec7 th\u1ed1ng b\u1ea1n ph\u00e2n t\u00edch. \ud83e\udde0<\/p>\n

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\"Marker-style<\/figure>\n<\/div>\n

Hi\u1ec3u r\u00f5 v\u1ec1 s\u01a1 \u0111\u1ed3 lu\u1ed3ng: Lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 lu\u1ed3ng logic \ud83d\udd04<\/h2>\n

S\u01a1 \u0111\u1ed3 lu\u1ed3ng l\u00e0 m\u1ed9t bi\u1ec3u \u0111\u1ed3 m\u00f4 t\u1ea3 quy tr\u00ecnh ho\u1eb7c c\u00f4ng vi\u1ec7c. N\u00f3 s\u1eed d\u1ee5ng m\u1ed9t chu\u1ed7i c\u00e1c h\u00ecnh d\u1ea1ng \u0111\u1ec3 th\u1ec3 hi\u1ec7n c\u00e1c b\u01b0\u1edbc v\u00e0 quy\u1ebft \u0111\u1ecbnh li\u00ean quan \u0111\u1ebfn m\u1ed9t nhi\u1ec7m v\u1ee5 c\u1ee5 th\u1ec3. Trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng, s\u01a1 \u0111\u1ed3 lu\u1ed3ng truy\u1ec1n th\u1ed1ng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 v\u1ebd ra logic theo tr\u00ecnh t\u1ef1 c\u1ee7a h\u1ec7 th\u1ed1ng. Ch\u00fang t\u1eadp trung v\u00e0o ph\u1ea7n c\u00e1ch th\u1ee9c<\/em>c\u1ee7a m\u1ed9t quy tr\u00ecnh\u2014c\u00e1ch d\u1eef li\u1ec7u di chuy\u1ec3n t\u1eeb b\u01b0\u1edbc n\u00e0y sang b\u01b0\u1edbc kh\u00e1c v\u00e0 c\u00e1ch c\u00e1c quy\u1ebft \u0111\u1ecbnh chia nh\u00e1nh con \u0111\u01b0\u1eddng ti\u1ebfn tri\u1ec3n.<\/p>\n

C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng<\/h3>\n

S\u01a1 \u0111\u1ed3 lu\u1ed3ng d\u1ef1a v\u00e0o c\u00e1c k\u00fd hi\u1ec7u chu\u1ea9n \u0111\u1ec3 truy\u1ec1n \u0111\u1ea1t \u00fd ngh\u0129a. M\u1eb7c d\u00f9 c\u00f3 s\u1ef1 kh\u00e1c bi\u1ec7t, c\u00e1c th\u00e0nh ph\u1ea7n ph\u1ed5 bi\u1ebfn nh\u1ea5t bao g\u1ed3m:<\/p>\n

    \n
  • K\u1ebft th\u00fac:<\/strong>Nh\u1eefng h\u00ecnh elip \u0111\u00e1nh d\u1ea5u \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac c\u1ee7a quy tr\u00ecnh.<\/li>\n
  • Quy tr\u00ecnh:<\/strong>Nh\u1eefng h\u00ecnh ch\u1eef nh\u1eadt ch\u1ec9 ra m\u1ed9t h\u00e0nh \u0111\u1ed9ng ho\u1eb7c thao t\u00e1c c\u1ea7n th\u1ef1c hi\u1ec7n.<\/li>\n
  • Quy\u1ebft \u0111\u1ecbnh:<\/strong>Nh\u1eefng h\u00ecnh thoi \u0111\u1ea1i di\u1ec7n cho \u0111i\u1ec3m m\u00e0 lu\u1ed3ng ph\u00e2n nh\u00e1nh d\u1ef1a tr\u00ean m\u1ed9t \u0111i\u1ec1u ki\u1ec7n (c\u00f3\/kh\u00f4ng ho\u1eb7c \u0111\u00fang\/sai).<\/li>\n
  • Nh\u1eadp\/xu\u1ea5t:<\/strong>Nh\u1eefng h\u00ecnh b\u00ecnh h\u00e0nh th\u1ec3 hi\u1ec7n thao t\u00e1c nh\u1eadp d\u1eef li\u1ec7u ho\u1eb7c hi\u1ec3n th\u1ecb d\u1eef li\u1ec7u.<\/li>\n
  • \u0110\u01b0\u1eddng lu\u1ed3ng:<\/strong>Nh\u1eefng m\u0169i t\u00ean n\u1ed1i c\u00e1c k\u00fd hi\u1ec7u \u0111\u1ec3 ch\u1ec9 h\u01b0\u1edbng lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n.<\/li>\n<\/ul>\n

    Tr\u1ecdng t\u00e2m: Logic tu\u1ea7n t\u1ef1<\/h3>\n

    \u0110i\u1ec3m m\u1ea1nh ch\u00ednh c\u1ee7a s\u01a1 \u0111\u1ed3 lu\u1ed3ng n\u1eb1m \u1edf kh\u1ea3 n\u0103ng th\u1ec3 hi\u1ec7n logic tu\u1ea7n t\u1ef1. N\u1ebfu b\u1ea1n \u0111ang ph\u00e2n t\u00edch m\u1ed9t quy tr\u00ecnh t\u00ednh l\u01b0\u01a1ng, s\u01a1 \u0111\u1ed3 lu\u1ed3ng s\u1ebd hi\u1ec7u qu\u1ea3 trong vi\u1ec7c hi\u1ec3n th\u1ecb c\u00e1c b\u01b0\u1edbc: truy xu\u1ea5t d\u1eef li\u1ec7u nh\u00e2n vi\u00ean, ki\u1ec3m tra t\u00ecnh tr\u1ea1ng thu\u1ebf, t\u00ednh kho\u1ea3n kh\u1ea5u tr\u1eeb, c\u1eadp nh\u1eadt s\u1ed5 k\u1ebf to\u00e1n v\u00e0 in b\u00e1o c\u00e1o. Lu\u1ed3ng l\u00e0 tuy\u1ebfn t\u00ednh, ch\u1ec9 ph\u00e2n nh\u00e1nh khi \u0111\u00e1p \u1ee9ng c\u00e1c \u0111i\u1ec1u ki\u1ec7n c\u1ee5 th\u1ec3. \u0110i\u1ec1u n\u00e0y khi\u1ebfn s\u01a1 \u0111\u1ed3 lu\u1ed3ng tr\u1edf th\u00e0nh c\u00f4ng c\u1ee5 tuy\u1ec7t v\u1eddi \u0111\u1ec3 ghi ch\u00e9p c\u00e1c thu\u1eadt to\u00e1n ho\u1eb7c quy t\u1eafc kinh doanh tu\u00e2n theo th\u1ee9 t\u1ef1 nghi\u00eam ng\u1eb7t.<\/p>\n

    Tuy nhi\u00ean, s\u01a1 \u0111\u1ed3 lu\u1ed3ng c\u00f3 th\u1ec3 tr\u1edf n\u00ean kh\u00f3 ki\u1ec3m so\u00e1t khi m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng c\u00f3 h\u00e0nh vi \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi s\u1ef1 ki\u1ec7n ph\u1ee9c t\u1ea1p. N\u1ebfu m\u1ed9t h\u1ec7 th\u1ed1ng c\u00f3 th\u1ec3 \u1edf nhi\u1ec1u tr\u1ea1ng th\u00e1i \u0111\u1ed3ng th\u1eddi, ho\u1eb7c th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n thao t\u00e1c ph\u1ee5 thu\u1ed9c v\u00e0o c\u00e1c s\u1ef1 ki\u1ec7n b\u00ean ngo\u00e0i thay v\u00ec m\u1ed9t tr\u00ecnh t\u1ef1 c\u1ed1 \u0111\u1ecbnh, s\u01a1 \u0111\u1ed3 lu\u1ed3ng c\u00f3 th\u1ec3 g\u1eb7p kh\u00f3 kh\u0103n trong vi\u1ec7c truy\u1ec1n t\u1ea3i \u0111\u1ed9 ph\u1ee9c t\u1ea1p m\u00e0 kh\u00f4ng tr\u1edf th\u00e0nh m\u1ed9t s\u01a1 \u0111\u1ed3 r\u1ed1i nh\u01b0 \u201cm\u1ef3 \u0103n li\u1ec1n\u201d. \ud83d\udd78\ufe0f<\/p>\n

    Hi\u1ec3u r\u00f5 v\u1ec1 s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i: Chu k\u1ef3 s\u1ed1ng v\u00e0 h\u00e0nh vi c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng \ud83d\udd04<\/h2>\n

    S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i, th\u01b0\u1eddng \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 s\u01a1 \u0111\u1ed3 m\u00e1y tr\u1ea1ng th\u00e1i trong UML (Ng\u00f4n ng\u1eef m\u00f4 h\u00ecnh h\u00f3a th\u1ed1ng nh\u1ea5t), t\u1eadp trung v\u00e0o h\u00e0nh vi c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng ho\u1eb7c th\u00e0nh ph\u1ea7n h\u1ec7 th\u1ed1ng c\u1ee5 th\u1ec3 theo th\u1eddi gian. Kh\u00e1c v\u1edbi s\u01a1 \u0111\u1ed3 lu\u1ed3ng, v\u1ed1n theo d\u00f5i lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n, s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i theo d\u00f5i tr\u1ea1ng th\u00e1i c\u1ee7a m\u1ed9t th\u1ef1c th\u1ec3. Ch\u00fang tr\u1ea3 l\u1eddi c\u00e2u h\u1ecfi: \u0110\u1ed1i t\u01b0\u1ee3ng \u0111ang \u1edf tr\u1ea1ng th\u00e1i n\u00e0o, v\u00e0 n\u00f3 ph\u1ea3n \u1ee9ng nh\u01b0 th\u1ebf n\u00e0o tr\u01b0\u1edbc c\u00e1c s\u1ef1 ki\u1ec7n?<\/em><\/p>\n

    C\u00e1c th\u00e0nh ph\u1ea7n ch\u00ednh c\u1ee7a s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i<\/h3>\n

    S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i s\u1eed d\u1ee5ng m\u1ed9t b\u1ed9 c\u00e1c y\u1ebfu t\u1ed1 tr\u1ef1c quan kh\u00e1c nhau, \u0111\u01b0\u1ee3c thi\u1ebft k\u1ebf ri\u00eang cho m\u00f4 h\u00ecnh h\u00f3a chu k\u1ef3 s\u1ed1ng:<\/p>\n

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    • Tr\u1ea1ng th\u00e1i:<\/strong>M\u1ed9t \u0111i\u1ec1u ki\u1ec7n ho\u1eb7c t\u00ecnh hu\u1ed1ng trong chu k\u1ef3 s\u1ed1ng c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng, n\u01a1i \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u00f3 th\u1ecfa m\u00e3n m\u1ed9t \u0111i\u1ec1u ki\u1ec7n nh\u1ea5t \u0111\u1ecbnh, th\u1ef1c hi\u1ec7n m\u1ed9t ho\u1ea1t \u0111\u1ed9ng n\u00e0o \u0111\u00f3 ho\u1eb7c ch\u1edd \u0111\u1ee3i m\u1ed9t s\u1ef1 ki\u1ec7n. Ch\u00fang th\u01b0\u1eddng \u0111\u01b0\u1ee3c th\u1ec3 hi\u1ec7n d\u01b0\u1edbi d\u1ea1ng h\u00ecnh ch\u1eef nh\u1eadt tr\u00f2n.<\/li>\n
    • Chuy\u1ec3n ti\u1ebfp:<\/strong> M\u1ed9t li\u00ean k\u1ebft gi\u1eefa hai tr\u1ea1ng th\u00e1i, cho th\u1ea5y s\u1ef1 thay \u0111\u1ed5i t\u1eeb m\u1ed9t tr\u1ea1ng th\u00e1i sang tr\u1ea1ng th\u00e1i kh\u00e1c. C\u00e1c chuy\u1ec3n ti\u1ebfp th\u01b0\u1eddng \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n.<\/li>\n
    • S\u1ef1 ki\u1ec7n:<\/strong> M\u1ed9t \u0111i\u1ec1u g\u00ec \u0111\u00f3 x\u1ea3y ra t\u1ea1i m\u1ed9t th\u1eddi \u0111i\u1ec3m c\u1ee5 th\u1ec3, ch\u1eb3ng h\u1ea1n nh\u01b0 ng\u01b0\u1eddi d\u00f9ng nh\u1ea5p v\u00e0o n\u00fat ho\u1eb7c c\u1ea3m bi\u1ebfn \u0111\u1ecdc m\u1ed9t gi\u00e1 tr\u1ecb.<\/li>\n
    • Tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u:<\/strong> M\u1ed9t h\u00ecnh tr\u00f2n \u0111\u1ea7y m\u00e0u s\u1eafc ch\u1ec9 \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u c\u1ee7a m\u00e1y tr\u1ea1ng th\u00e1i.<\/li>\n
    • Tr\u1ea1ng th\u00e1i k\u1ebft th\u00fac:<\/strong> M\u1ed9t h\u00ecnh tr\u00f2n c\u00f3 m\u1ed9t ch\u1ea5m \u1edf b\u00ean trong, \u0111\u1ea1i di\u1ec7n cho s\u1ef1 k\u1ebft th\u00fac c\u1ee7a v\u00f2ng \u0111\u1eddi.<\/li>\n
    • H\u00e0nh \u0111\u1ed9ng:<\/strong> C\u00e1c ho\u1ea1t \u0111\u1ed9ng \u0111\u01b0\u1ee3c th\u1ef1c hi\u1ec7n khi nh\u1eadp v\u00e0o ho\u1eb7c r\u1eddi kh\u1ecfi m\u1ed9t tr\u1ea1ng th\u00e1i, ho\u1eb7c trong qu\u00e1 tr\u00ecnh chuy\u1ec3n ti\u1ebfp (v\u00ed d\u1ee5: \u201cKhi v\u00e0o: G\u1eedi th\u00f4ng b\u00e1o\u201d).<\/li>\n<\/ul>\n

      Tr\u1ecdng t\u00e2m: H\u00e0nh vi \u0111\u1ed9ng<\/h3>\n

      S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i xu\u1ea5t s\u1eafc trong vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ea3n \u1ee9ng. X\u00e9t m\u1ed9t h\u1ec7 th\u1ed1ng \u0111\u1eb7t h\u00e0ng tr\u1ef1c tuy\u1ebfn. M\u1ed9t \u0111\u01a1n h\u00e0ng kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t quy tr\u00ecnh; n\u00f3 c\u00f3 m\u1ed9t v\u00f2ng \u0111\u1eddi. N\u00f3 b\u1eaft \u0111\u1ea7u \u1edf tr\u1ea1ng th\u00e1i \u201cCh\u1edd x\u1eed l\u00fd\u201d, chuy\u1ec3n sang \u201c\u0110\u00e3 thanh to\u00e1n\u201d, r\u1ed3i \u201c\u0110\u00e3 giao h\u00e0ng\u201d, v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 \u201c\u0110\u00e3 giao th\u00e0nh c\u00f4ng\u201d. N\u1ebfu thanh to\u00e1n th\u1ea5t b\u1ea1i, n\u00f3 s\u1ebd chuy\u1ec3n sang tr\u1ea1ng th\u00e1i \u201cTh\u1ea5t b\u1ea1i\u201d. S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i tr\u1ef1c quan h\u00f3a r\u00f5 r\u00e0ng c\u00e1c tr\u1ea1ng th\u00e1i ri\u00eang bi\u1ec7t n\u00e0y v\u00e0 c\u00e1c \u0111\u01b0\u1eddng \u0111i h\u1ee3p l\u1ec7 gi\u1eefa ch\u00fang. N\u00f3 \u0111\u1ea3m b\u1ea3o r\u1eb1ng m\u1ed9t \u0111\u01a1n h\u00e0ng kh\u00f4ng th\u1ec3 nh\u1ea3y t\u1eeb \u201cCh\u1edd x\u1eed l\u00fd\u201d sang \u201c\u0110\u00e3 giao th\u00e0nh c\u00f4ng\u201d m\u00e0 kh\u00f4ng \u0111i qua c\u00e1c giai \u0111o\u1ea1n thanh to\u00e1n v\u00e0 giao h\u00e0ng trung gian.<\/p>\n

      S\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y r\u1ea5t quan tr\u1ecdng trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. N\u00f3 bu\u1ed9c nh\u00e0 ph\u00e2n t\u00edch ph\u1ea3i suy ngh\u0129 v\u1ec1 c\u00e1c \u0111i\u1ec1u ki\u1ec7n n\u1ed9i t\u1ea1i c\u1ee7a h\u1ec7 th\u1ed1ng, ch\u1ee9 kh\u00f4ng ch\u1ec9 \u0111\u01a1n thu\u1ea7n l\u00e0 tr\u00ecnh t\u1ef1 c\u00e1c b\u01b0\u1edbc. N\u00f3 ng\u0103n ch\u1eb7n c\u00e1c tr\u1ea1ng th\u00e1i kh\u00f4ng h\u1ee3p l\u1ec7 v\u00e0 \u0111\u1ea3m b\u1ea3o h\u1ec7 th\u1ed1ng ho\u1ea1t \u0111\u1ed9ng m\u1ed9t c\u00e1ch d\u1ef1 \u0111o\u00e1n \u0111\u01b0\u1ee3c b\u1ea5t k\u1ec3 th\u1ee9 t\u1ef1 x\u1ea3y ra c\u1ee7a c\u00e1c s\u1ef1 ki\u1ec7n.<\/p>\n

      S\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 c\u1ea5u tr\u00fac: So s\u00e1nh chi ti\u1ebft \ud83d\udcdd<\/h2>\n

      \u0110\u1ec3 l\u00e0m r\u00f5 s\u1ef1 kh\u00e1c bi\u1ec7t, ch\u00fang ta c\u1ea7n xem x\u00e9t c\u00e1ch c\u00e1c s\u01a1 \u0111\u1ed3 n\u00e0y x\u1eed l\u00fd c\u00e1c kh\u00e1i ni\u1ec7m m\u00f4 h\u00ecnh h\u00f3a c\u1ee5 th\u1ec3. B\u1ea3ng d\u01b0\u1edbi \u0111\u00e2y n\u00eau r\u00f5 nh\u1eefng kh\u00e1c bi\u1ec7t c\u1ea5u tr\u00fac ch\u00ednh gi\u1eefa s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 v\u00e0 s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i.<\/p>\n\n\n\n\n\n\n\n\n\n\n
      T\u00ednh n\u0103ng<\/th>\nS\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3<\/th>\nS\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i<\/th>\n<\/tr>\n<\/thead>\n
      Tr\u1ecdng t\u00e2m ch\u00ednh<\/strong><\/td>\nLu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c b\u01b0\u1edbc thu\u1eadt to\u00e1n.<\/td>\nV\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng v\u00e0 c\u00e1c tr\u1ea1ng th\u00e1i n\u1ed9i t\u1ea1i.<\/td>\n<\/tr>\n
      \u00dd ngh\u0129a n\u00fat<\/strong><\/td>\nQuy tr\u00ecnh, quy\u1ebft \u0111\u1ecbnh ho\u1eb7c h\u00e0nh \u0111\u1ed9ng.<\/td>\nTr\u1ea1ng th\u00e1i (m\u1ed9t \u0111i\u1ec1u ki\u1ec7n t\u1ed3n t\u1ea1i).<\/td>\n<\/tr>\n
      H\u01b0\u1edbng lu\u1ed3ng<\/strong><\/td>\nTuy\u1ebfn t\u00ednh c\u00f3 nh\u00e1nh.<\/td>\nM\u1ea1ng l\u01b0\u1edbi c\u00e1c tr\u1ea1ng th\u00e1i (th\u01b0\u1eddng kh\u00f4ng tuy\u1ebfn t\u00ednh).<\/td>\n<\/tr>\n
      S\u1ef1 ki\u1ec7n<\/strong><\/td>\nNg\u1ea7m trong c\u00e1c quy\u1ebft \u0111\u1ecbnh.<\/td>\nC\u00e1c t\u00e1c nh\u00e2n k\u00edch ho\u1ea1t r\u00f5 r\u00e0ng cho c\u00e1c chuy\u1ec3n ti\u1ebfp.<\/td>\n<\/tr>\n
      H\u00e0nh vi \u0111\u1ed3ng th\u1eddi<\/strong><\/td>\nKh\u00f3 bi\u1ec3u di\u1ec5n.<\/td>\n\u0110\u01b0\u1ee3c h\u1ed7 tr\u1ee3 th\u00f4ng qua c\u00e1c tr\u1ea1ng th\u00e1i con ho\u1eb7c l\u1ecbch s\u1eed.<\/td>\n<\/tr>\n
      Tr\u01b0\u1eddng h\u1ee3p s\u1eed d\u1ee5ng t\u1ed1t nh\u1ea5t<\/strong><\/td>\nLogic theo quy tr\u00ecnh, thu\u1eadt to\u00e1n.<\/td>\nGiao di\u1ec7n ng\u01b0\u1eddi d\u00f9ng, c\u00e1c quy t\u1eafc kinh doanh ph\u1ee9c t\u1ea1p.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Khi n\u00e0o n\u00ean s\u1eed d\u1ee5ng t\u1eebng k\u1ef9 thu\u1eadt trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83c\udfaf<\/h2>\n

      Vi\u1ec7c ch\u1ecdn c\u00f4ng c\u1ee5 ph\u00f9 h\u1ee3p ph\u1ee5 thu\u1ed9c v\u00e0o b\u1ea3n ch\u1ea5t c\u1ee7a h\u1ec7 th\u1ed1ng b\u1ea1n \u0111ang ph\u00e2n t\u00edch. S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng cho v\u00f2ng \u0111\u1eddi \u0111\u1ed1i t\u01b0\u1ee3ng ph\u1ee9c t\u1ea1p c\u00f3 th\u1ec3 d\u1eabn \u0111\u1ebfn s\u1ef1 nh\u1ea7m l\u1eabn, trong khi s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i cho m\u1ed9t ph\u00e9p t\u00ednh tuy\u1ebfn t\u00ednh \u0111\u01a1n gi\u1ea3n l\u1ea1i l\u00e0 qu\u00e1 m\u1ee9c. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 ph\u00e2n t\u00edch c\u00e1c t\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng ph\u00f9 h\u1ee3p.<\/p>\n

      T\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng<\/h3>\n

      S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng khi logic mang t\u00ednh quy tr\u00ecnh v\u00e0 th\u1ee9 t\u1ef1 th\u1ef1c hi\u1ec7n c\u00e1c thao t\u00e1c l\u00e0 c\u1ed1 \u0111\u1ecbnh. C\u00e1c v\u00ed d\u1ee5 bao g\u1ed3m:<\/p>\n

        \n
      • C\u00e1c \u0111\u01b0\u1eddng d\u1eabn x\u1eed l\u00fd d\u1eef li\u1ec7u:<\/strong> C\u00e1ch d\u1eef li\u1ec7u \u0111\u01b0\u1ee3c tr\u00edch xu\u1ea5t, chuy\u1ec3n \u0111\u1ed5i v\u00e0 t\u1ea3i (ETL) v\u00e0o c\u01a1 s\u1edf d\u1eef li\u1ec7u.<\/li>\n
      • Thi\u1ebft k\u1ebf thu\u1eadt to\u00e1n:<\/strong> C\u00e1c b\u01b0\u1edbc \u0111\u1ec3 s\u1eafp x\u1ebfp m\u1ed9t danh s\u00e1ch s\u1ed1 ho\u1eb7c t\u00ednh to\u00e1n m\u1ed9t c\u00f4ng th\u1ee9c to\u00e1n h\u1ecdc.<\/li>\n
      • C\u00e1c quy tr\u00ecnh v\u1eadn h\u00e0nh ti\u00eau chu\u1ea9n:<\/strong>H\u01b0\u1edbng d\u1eabn t\u1eebng b\u01b0\u1edbc cho ng\u01b0\u1eddi d\u00f9ng th\u1ef1c hi\u1ec7n trong m\u1ed9t quy tr\u00ecnh l\u00e0m vi\u1ec7c.<\/li>\n
      • C\u00e2y quy\u1ebft \u0111\u1ecbnh:<\/strong>C\u00e1c c\u1ea5u tr\u00fac logic if-then-else \u0111\u01a1n gi\u1ea3n m\u00e0 kh\u00f4ng c\u00f3 ph\u1ee5 thu\u1ed9c tr\u1ea1ng th\u00e1i ph\u1ee9c t\u1ea1p.<\/li>\n<\/ul>\n

        Trong c\u00e1c tr\u01b0\u1eddng h\u1ee3p n\u00e0y, tr\u1ecdng t\u00e2m l\u00e0 con \u0111\u01b0\u1eddng \u0111\u01b0\u1ee3c \u0111i qua. H\u1ec7 th\u1ed1ng gi\u1ed1ng nh\u01b0 m\u1ed9t ph\u01b0\u01a1ng ti\u1ec7n di chuy\u1ec3n t\u1eeb \u0111i\u1ec3m A \u0111\u1ebfn \u0111i\u1ec3m B, v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng m\u00f4 t\u1ea3 con \u0111\u01b0\u1eddng \u0111\u00f3.<\/p>\n

        T\u00ecnh hu\u1ed1ng s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i<\/h3>\n

        S\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i khi h\u00e0nh vi ph\u1ee5 thu\u1ed9c v\u00e0o l\u1ecbch s\u1eed ho\u1eb7c tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i c\u1ee7a m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng. C\u00e1c v\u00ed d\u1ee5 bao g\u1ed3m:<\/p>\n

          \n
        • X\u00e1c th\u1ef1c ng\u01b0\u1eddi d\u00f9ng:<\/strong>M\u1ed9t phi\u00ean c\u00f3 th\u1ec3 \u1edf tr\u1ea1ng th\u00e1i \u201c\u0110\u00e3 \u0111\u0103ng xu\u1ea5t,\u201d \u201c\u0110\u00e3 x\u00e1c th\u1ef1c,\u201d \u201cB\u1ecb kh\u00f3a,\u201d ho\u1eb7c \u201cH\u1ebft h\u1ea1n.\u201d C\u00e1c h\u00e0nh \u0111\u1ed9ng h\u1ee3p l\u1ec7 ho\u00e0n to\u00e0n ph\u1ee5 thu\u1ed9c v\u00e0o tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i.<\/li>\n
        • Qu\u1ea3n l\u00fd \u0111\u01a1n h\u00e0ng:<\/strong> Nh\u01b0 \u0111\u00e3 n\u00f3i \u1edf tr\u00ean, m\u1ed9t \u0111\u01a1n h\u00e0ng c\u00f3 v\u00f2ng \u0111\u1eddi kh\u00f4ng th\u1ec3 vi ph\u1ea1m (v\u00ed d\u1ee5: b\u1ea1n kh\u00f4ng th\u1ec3 h\u1ee7y \u0111\u01a1n h\u00e0ng \u201c\u0110\u00e3 giao\u201d m\u00e0 kh\u00f4ng ho\u00e0n tr\u1ea3 n\u00f3).<\/li>\n
        • Ki\u1ec3m so\u00e1t thi\u1ebft b\u1ecb:<\/strong> M\u1ed9t b\u1ed9 \u0111i\u1ec1u nhi\u1ec7t chuy\u1ec3n \u0111\u1ed5i gi\u1eefa \u201c\u0110ang s\u01b0\u1edfi,\u201d \u201c\u0110ang l\u00e0m m\u00e1t,\u201d v\u00e0 \u201cT\u1eaft\u201d d\u1ef1a tr\u00ean c\u00e1c t\u00edn hi\u1ec7u k\u00edch ho\u1ea1t nhi\u1ec7t \u0111\u1ed9.<\/li>\n
        • Logic tr\u00f2 ch\u01a1i:<\/strong> C\u00e1c tr\u1ea1ng th\u00e1i s\u1ee9c kh\u1ecfe nh\u00e2n v\u1eadt (S\u1ed1ng, \u0110ang ch\u1ebft, Ch\u1ebft) n\u01a1i c\u00e1c h\u00e0nh \u0111\u1ed9ng nh\u01b0 \u201cCh\u1eefa l\u00e0nh\u201d ch\u1ec9 h\u1ee3p l\u1ec7 \u1edf m\u1ed9t s\u1ed1 tr\u1ea1ng th\u00e1i nh\u1ea5t \u0111\u1ecbnh.<\/li>\n<\/ul>\n

          \u1ede \u0111\u00e2y, tr\u1ecdng t\u00e2m l\u00e0 tr\u1ea1ng th\u00e1i c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng. H\u1ec7 th\u1ed1ng gi\u1ed1ng nh\u01b0 m\u1ed9t nh\u00e2n v\u1eadt c\u00f3 t\u00ednh c\u00e1ch v\u00e0 l\u1ecbch s\u1eed, v\u00e0 s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i m\u00f4 t\u1ea3 c\u00e1c ph\u1ea3n \u1ee9ng c\u1ee7a n\u00f3.<\/p>\n

          Nh\u1eefng sai l\u1ea7m ph\u1ed5 bi\u1ebfn trong m\u00f4 h\u00ecnh h\u00f3a \ud83d\udea7<\/h2>\n

          Sinh vi\u00ean ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng th\u01b0\u1eddng m\u1eafc nh\u1eefng sai l\u1ea7m c\u1ee5 th\u1ec3 khi chuy\u1ec3n \u0111\u1ed5i gi\u1eefa hai ph\u01b0\u01a1ng ph\u00e1p m\u00f4 h\u00ecnh h\u00f3a n\u00e0y. Vi\u1ec7c nh\u1eadn th\u1ee9c \u0111\u01b0\u1ee3c nh\u1eefng c\u00e1i b\u1eaby n\u00e0y c\u00f3 th\u1ec3 gi\u00fap b\u1ea1n ti\u1ebft ki\u1ec7m th\u1eddi gian trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf.<\/p>\n

          C\u00e1i b\u1eaby 1: Tr\u1ed9n l\u1eabn logic v\u00e0 tr\u1ea1ng th\u00e1i<\/h3>\n

          M\u1ed9t l\u1ed7i ph\u1ed5 bi\u1ebfn l\u00e0 c\u1ed1 g\u1eafng m\u00f4 h\u00ecnh h\u00f3a to\u00e0n b\u1ed9 tr\u1ea1ng th\u00e1i h\u1ec7 th\u1ed1ng trong s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3. \u0110i\u1ec1u n\u00e0y d\u1eabn \u0111\u1ebfn nh\u1eefng s\u01a1 \u0111\u1ed3 kh\u1ed5ng l\u1ed3, kh\u00f3 \u0111\u1ecdc, n\u01a1i c\u00e1c h\u00ecnh thoi quy\u1ebft \u0111\u1ecbnh bi\u1ec3u di\u1ec5n thay \u0111\u1ed5i tr\u1ea1ng th\u00e1i thay v\u00ec c\u00e1c \u0111i\u1ec1u ki\u1ec7n \u0111\u01a1n gi\u1ea3n. V\u00ed d\u1ee5, \u0111\u1eb7t c\u00e2u h\u1ecfi ‘Ng\u01b0\u1eddi d\u00f9ng \u0111\u00e3 \u0111\u0103ng nh\u1eadp ch\u01b0a?’ d\u01b0\u1edbi d\u1ea1ng h\u00ecnh thoi quy\u1ebft \u0111\u1ecbnh trong s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 s\u1ebd k\u00e9m hi\u1ec7u qu\u1ea3 h\u01a1n so v\u1edbi vi\u1ec7c \u0111\u1ecbnh ngh\u0129a m\u1ed9t tr\u1ea1ng th\u00e1i ‘\u0110\u00e3 \u0111\u0103ng xu\u1ea5t’ trong s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i. C\u00e1ch tr\u01b0\u1edbc ki\u1ec3m tra m\u1ed9t c\u1edd hi\u1ec7u; c\u00e1ch sau qu\u1ea3n l\u00fd v\u00f2ng \u0111\u1eddi c\u1ee7a h\u1ec7 th\u1ed1ng.<\/p>\n

          C\u00e1i b\u1eaby 2: B\u1ecf qua c\u00e1c \u0111i\u1ec3m b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac<\/h3>\n

          Trong s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i, m\u1ecdi \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ec1u ph\u1ea3i c\u00f3 tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh v\u00e0 tr\u1ea1ng th\u00e1i cu\u1ed1i c\u00f9ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh (ho\u1eb7c \u0111i\u1ec1u ki\u1ec7n k\u1ebft th\u00fac). Sinh vi\u00ean \u0111\u00f4i khi v\u1ebd s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i tr\u00f4i n\u1ed5i m\u00e0 kh\u00f4ng c\u00f3 \u0111i\u1ec3m v\u00e0o hay \u0111i\u1ec3m ra. \u0110i\u1ec1u n\u00e0y khi\u1ebfn vi\u1ec7c x\u00e1c \u0111\u1ecbnh c\u00e1ch h\u1ec7 th\u1ed1ng kh\u1edfi t\u1ea1o hay t\u1eaft m\u00e1y m\u1ed9t c\u00e1ch tr\u01a1n tru tr\u1edf n\u00ean b\u1ea5t kh\u1ea3 thi. Lu\u00f4n \u0111\u1ea3m b\u1ea3o tr\u1ea1ng th\u00e1i ban \u0111\u1ea7u k\u1ebft n\u1ed1i v\u1edbi tr\u1ea1ng th\u00e1i h\u1ee3p l\u1ec7 \u0111\u1ea7u ti\u00ean v\u00e0 tr\u1ea1ng th\u00e1i cu\u1ed1i c\u00f9ng ph\u1ea3i c\u00f3 th\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c t\u1eeb t\u1ea5t c\u1ea3 c\u00e1c tr\u1ea1ng th\u00e1i kh\u00e1c.<\/p>\n

          C\u00e1i b\u1eaby 3: L\u00e0m ph\u1ee9c t\u1ea1p h\u00f3a qu\u00e1 m\u1ee9c v\u1edbi c\u00e1c s\u1ef1 ki\u1ec7n<\/h3>\n

          Ng\u01b0\u1ee3c l\u1ea1i, m\u1ed9t s\u1ed1 sinh vi\u00ean s\u1eed d\u1ee5ng s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i cho c\u00e1c qu\u00e1 tr\u00ecnh tuy\u1ebfn t\u00ednh \u0111\u01a1n gi\u1ea3n. N\u1ebfu m\u1ed9t qu\u00e1 tr\u00ecnh l\u00e0 tu\u1ea7n t\u1ef1 nghi\u00eam ng\u1eb7t (B\u01b0\u1edbc A \u2192 B\u01b0\u1edbc B \u2192 B\u01b0\u1edbc C), s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i s\u1ebd t\u1ea1o ra s\u1ef1 ph\u1ee9c t\u1ea1p kh\u00f4ng c\u1ea7n thi\u1ebft. C\u00e1c n\u00fat b\u1ed5 sung v\u00e0 nh\u00e3n s\u1ef1 ki\u1ec7n c\u00f3 th\u1ec3 che khu\u1ea5t lu\u1ed3ng logic \u0111\u01a1n gi\u1ea3n. H\u00e3y gi\u1eef \u0111\u01a1n gi\u1ea3n: d\u00f9ng s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 cho logic tuy\u1ebfn t\u00ednh.<\/p>\n

          C\u00e1i b\u1eaby 4: Chuy\u1ec3n ti\u1ebfp m\u01a1 h\u1ed3<\/h3>\n

          C\u00e1c chuy\u1ec3n ti\u1ebfp trong s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i ph\u1ea3i \u0111\u01b0\u1ee3c k\u00edch ho\u1ea1t b\u1edfi c\u00e1c s\u1ef1 ki\u1ec7n c\u1ee5 th\u1ec3. M\u1ed9t l\u1ed7i ph\u1ed5 bi\u1ebfn l\u00e0 v\u1ebd c\u00e1c chuy\u1ec3n ti\u1ebfp ph\u1ee5 thu\u1ed9c v\u00e0o th\u1eddi gian ng\u1ea7m ho\u1eb7c c\u00e1c \u0111i\u1ec1u ki\u1ec7n kh\u00f4ng \u0111\u01b0\u1ee3c x\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng. M\u1ed7i m\u0169i t\u00ean r\u1eddi kh\u1ecfi m\u1ed9t tr\u1ea1ng th\u00e1i n\u00ean \u0111\u01b0\u1ee3c g\u00e1n nh\u00e3n b\u1eb1ng s\u1ef1 ki\u1ec7n g\u00e2y ra chuy\u1ec3n ti\u1ebfp (v\u00ed d\u1ee5: \u201cKhi h\u1ebft th\u1eddi gian\u201d, \u201cKhi nh\u1ea5p chu\u1ed9t\u201d, \u201cKhi x\u1ea3y ra l\u1ed7i\u201d). S\u1ef1 r\u00f5 r\u00e0ng n\u00e0y l\u00e0 thi\u1ebft y\u1ebfu \u0111\u1ed1i v\u1edbi c\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n khi tri\u1ec3n khai h\u1ec7 th\u1ed1ng.<\/p>\n

          C\u00e1c th\u1ef1c h\u00e0nh t\u1ed1t nh\u1ea5t cho sinh vi\u00ean ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng \ud83d\udca1<\/h2>\n

          \u0110\u1ec3 th\u00e0nh th\u1ea1o c\u00e1c ph\u01b0\u01a1ng ph\u00e1p m\u00f4 h\u00ecnh h\u00f3a n\u00e0y, sinh vi\u00ean n\u00ean h\u00ecnh th\u00e0nh nh\u1eefng th\u00f3i quen c\u1ee5 th\u1ec3 trong c\u00e1c giai \u0111o\u1ea1n ph\u00e2n t\u00edch v\u00e0 thi\u1ebft k\u1ebf. T\u00ednh nh\u1ea5t qu\u00e1n v\u00e0 r\u00f5 r\u00e0ng quan tr\u1ecdng h\u01a1n vi\u1ec7c tu\u00e2n th\u1ee7 nghi\u00eam ng\u1eb7t m\u1ecdi quy t\u1eafc k\u00fd hi\u1ec7u nh\u1ecf.<\/p>\n

            \n
          • B\u1eaft \u0111\u1ea7u t\u1eeb \u0111\u1ed1i t\u01b0\u1ee3ng:<\/strong> Tr\u01b0\u1edbc khi v\u1ebd, h\u00e3y x\u00e1c \u0111\u1ecbnh \u0111\u1ed1i t\u01b0\u1ee3ng b\u1ea1n \u0111ang m\u00f4 h\u00ecnh h\u00f3a. \u0110\u00f3 l\u00e0 m\u1ed9t qu\u00e1 tr\u00ecnh (d\u00f9ng s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3) hay m\u1ed9t \u0111\u1ed1i t\u01b0\u1ee3ng (d\u00f9ng s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i)?<\/li>\n
          • X\u00e1c \u0111\u1ecbnh ranh gi\u1edbi:<\/strong> X\u00e1c \u0111\u1ecbnh r\u00f5 r\u00e0ng n\u01a1i qu\u00e1 tr\u00ecnh b\u1eaft \u0111\u1ea7u v\u00e0 k\u1ebft th\u00fac. Kh\u00f4ng \u0111\u1ec3 l\u1ea1i c\u00e1c m\u0169i t\u00ean treo l\u01a1 l\u1eedng.<\/li>\n
          • Gi\u1eef c\u00e1c tr\u1ea1ng th\u00e1i nguy\u00ean t\u1eed:<\/strong> \u0110\u1ea3m b\u1ea3o m\u1ed7i tr\u1ea1ng th\u00e1i \u0111\u1ea1i di\u1ec7n cho m\u1ed9t \u0111i\u1ec1u ki\u1ec7n duy nh\u1ea5t v\u00e0 m\u1ea1ch l\u1ea1c. Tr\u00e1nh k\u1ebft h\u1ee3p nhi\u1ec1u thu\u1ed9c t\u00ednh \u0111\u1ed9c l\u1eadp v\u00e0o m\u1ed9t h\u1ed9p tr\u1ea1ng th\u00e1i.<\/li>\n
          • S\u1eed d\u1ee5ng ph\u00e2n c\u1ea5p:<\/strong> \u0110\u1ed1i v\u1edbi c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p, h\u00e3y s\u1eed d\u1ee5ng c\u00e1c tr\u1ea1ng th\u00e1i l\u1ed3ng gh\u00e9p (tr\u1ea1ng th\u00e1i con). \u0110i\u1ec1u n\u00e0y gi\u00fap s\u01a1 \u0111\u1ed3 c\u1ea5p cao \u0111\u01b0\u1ee3c g\u1ecdn g\u00e0ng, \u0111\u1ed3ng th\u1eddi cho ph\u00e9p hi\u1ec3n th\u1ecb h\u00e0nh vi chi ti\u1ebft trong ch\u1ebf \u0111\u1ed9 m\u1edf r\u1ed9ng.<\/li>\n
          • Ki\u1ec3m tra b\u1eb1ng c\u00e1c t\u00ecnh hu\u1ed1ng:<\/strong> \u0110i qua t\u1eebng c\u00e2u chuy\u1ec7n ng\u01b0\u1eddi d\u00f9ng \u0111\u1ec3 ki\u1ec3m tra xem s\u01a1 \u0111\u1ed3 c\u00f3 h\u1ee3p l\u00fd hay kh\u00f4ng. N\u1ebfu m\u1ed9t c\u00e2u chuy\u1ec7n ng\u01b0\u1eddi d\u00f9ng ng\u1ee5 \u00fd \u0111\u1ebfn m\u1ed9t tr\u1ea1ng th\u00e1i m\u00e0 b\u1ea1n ch\u01b0a \u0111\u1ecbnh ngh\u0129a, h\u00e3y b\u1ed5 sung n\u00f3.<\/li>\n
          • Tr\u00e1nh tr\u00f9ng l\u1eb7p:<\/strong> N\u1ebfu m\u1ed9t chuy\u1ec3n ti\u1ebfp c\u00f3 th\u1ec3 x\u1ea3y ra t\u1eeb nhi\u1ec1u tr\u1ea1ng th\u00e1i \u0111\u1ebfn c\u00f9ng m\u1ed9t tr\u1ea1ng th\u00e1i, h\u00e3y c\u00e2n nh\u1eafc h\u1ee3p nh\u1ea5t logic ho\u1eb7c s\u1eed d\u1ee5ng m\u1ed9t \u0111i\u1ec3m v\u00e0o chung.<\/li>\n<\/ul>\n

            C\u01a1 s\u1edf l\u00fd thuy\u1ebft: M\u00e1y tr\u1ea1ng th\u00e1i h\u1eefu h\u1ea1n \ud83e\uddee<\/h2>\n

            Hi\u1ec3u r\u00f5 l\u00fd thuy\u1ebft \u0111\u1eb1ng sau s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i s\u1ebd mang l\u1ea1i s\u1ef1 t\u1ef1 tin s\u00e2u s\u1eafc h\u01a1n trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i l\u00e0 bi\u1ec3u di\u1ec5n tr\u1ef1c quan c\u1ee7a M\u00e1y tr\u1ea1ng th\u00e1i h\u1eefu h\u1ea1n (FSM). FSM l\u00e0 m\u1ed9t m\u00f4 h\u00ecnh to\u00e1n h\u1ecdc v\u1ec1 t\u00ednh to\u00e1n \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 thi\u1ebft k\u1ebf c\u1ea3 ch\u01b0\u01a1ng tr\u00ecnh m\u00e1y t\u00ednh v\u00e0 m\u1ea1ch logic tu\u1ea7n t\u1ef1.<\/p>\n

            M\u1ed9t FSM bao g\u1ed3m:<\/p>\n

              \n
            • M\u1ed9t s\u1ed1 h\u1eefu h\u1ea1n c\u00e1c tr\u1ea1ng th\u00e1i.<\/li>\n
            • M\u1ed9t t\u1eadp h\u1ee3p c\u00e1c \u0111\u1ea7u v\u00e0o.<\/li>\n
            • M\u1ed9t h\u00e0m chuy\u1ec3n ti\u1ebfp x\u00e1c \u0111\u1ecbnh tr\u1ea1ng th\u00e1i ti\u1ebfp theo d\u1ef1a tr\u00ean tr\u1ea1ng th\u00e1i hi\u1ec7n t\u1ea1i v\u00e0 \u0111\u1ea7u v\u00e0o.<\/li>\n<\/ul>\n

              Ng\u01b0\u1ee3c l\u1ea1i, s\u01a1 \u0111\u1ed3 l\u01b0u \u0111\u1ed3 ph\u00f9 h\u1ee3p h\u01a1n v\u1edbi C\u00e1c \u0111\u1ed3 th\u1ecb lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n (CFG) \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng trong thi\u1ebft k\u1ebf tr\u00ecnh bi\u00ean d\u1ecbch. C\u00e1c CFG t\u1eadp trung v\u00e0o th\u1ee9 t\u1ef1 th\u1ef1c thi c\u1ee7a c\u00e1c l\u1ec7nh. Nh\u1eadn ra s\u1ef1 kh\u00e1c bi\u1ec7t l\u00fd thuy\u1ebft n\u00e0y s\u1ebd gi\u00fap b\u1ea1n gi\u1ea3i th\u00edch l\u1ef1a ch\u1ecdn m\u00f4 h\u00ecnh h\u00f3a c\u1ee7a m\u00ecnh v\u1edbi c\u00e1c b\u00ean li\u00ean quan k\u1ef9 thu\u1eadt m\u1ed9t c\u00e1ch hi\u1ec7u qu\u1ea3. B\u1ea1n kh\u00f4ng ch\u1ec9 \u0111ang v\u1ebd h\u00ecnh \u1ea3nh; b\u1ea1n \u0111ang l\u1ef1a ch\u1ecdn gi\u1eefa vi\u1ec7c m\u00f4 h\u00ecnh h\u00f3a m\u1ed9t tr\u1ea1ng th\u00e1i t\u00ednh to\u00e1n (FSM) hay m\u1ed9t h\u00e0nh tr\u00ecnh t\u00ednh to\u00e1n (CFG).<\/p>\n

              T\u00edch h\u1ee3p trong v\u00f2ng \u0111\u1eddi ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m \ud83d\udd17<\/h2>\n

              Nh\u1eefng s\u01a1 \u0111\u1ed3 n\u00e0y kh\u00f4ng t\u1ed3n t\u1ea1i trong kho\u1ea3ng tr\u1ed1ng. Ch\u00fang \u0111\u00f3ng vai tr\u00f2 c\u1ee5 th\u1ec3 trong v\u00f2ng \u0111\u1eddi ph\u00e1t tri\u1ec3n ph\u1ea7n m\u1ec1m (SDLC).<\/p>\n

              Thu th\u1eadp y\u00eau c\u1ea7u:<\/strong>S\u01a1 \u0111\u1ed3 lu\u1ed3ng th\u01b0\u1eddng \u0111\u01b0\u1ee3c s\u1eed d\u1ee5ng \u0111\u1ec3 ghi ch\u00e9p c\u00e1c y\u00eau c\u1ea7u kinh doanh. Ch\u00fang gi\u00fap c\u00e1c b\u00ean li\u00ean quan kh\u00f4ng chuy\u00ean hi\u1ec3u \u0111\u01b0\u1ee3c lu\u1ed3ng quy tr\u00ecnh. S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ghi ch\u00e9p c\u00e1c y\u00eau c\u1ea7u ch\u1ee9c n\u0103ng li\u00ean quan \u0111\u1ebfn h\u00e0nh vi c\u1ee7a \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n

              Giai \u0111o\u1ea1n thi\u1ebft k\u1ebf:<\/strong>Trong giai \u0111o\u1ea1n thi\u1ebft k\u1ebf, s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i h\u01b0\u1edbng d\u1eabn vi\u1ec7c tri\u1ec3n khai logic qu\u1ea3n l\u00fd tr\u1ea1ng th\u00e1i. C\u00e1c nh\u00e0 ph\u00e1t tri\u1ec3n s\u1eed d\u1ee5ng ch\u00fang \u0111\u1ec3 vi\u1ebft c\u00e1c c\u00e2u l\u1ec7nh switch-case ho\u1eb7c th\u01b0 vi\u1ec7n m\u00e1y tr\u1ea1ng th\u00e1i. S\u01a1 \u0111\u1ed3 lu\u1ed3ng h\u01b0\u1edbng d\u1eabn vi\u1ec7c tri\u1ec3n khai c\u00e1c h\u00e0m thu\u1eadt to\u00e1n.<\/p>\n

              Ki\u1ec3m th\u1eed:<\/strong>S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i r\u1ea5t quan tr\u1ecdng trong ki\u1ec3m th\u1eed. C\u00e1c tr\u01b0\u1eddng h\u1ee3p ki\u1ec3m th\u1eed c\u00f3 th\u1ec3 \u0111\u01b0\u1ee3c t\u1ea1o ra \u0111\u1ec3 bao ph\u1ee7 m\u1ecdi tr\u1ea1ng th\u00e1i v\u00e0 m\u1ecdi chuy\u1ec3n ti\u1ebfp. \u0110i\u1ec1u n\u00e0y \u0111\u01b0\u1ee3c g\u1ecdi l\u00e0 ki\u1ec3m th\u1eed chuy\u1ec3n ti\u1ebfp tr\u1ea1ng th\u00e1i. S\u01a1 \u0111\u1ed3 lu\u1ed3ng \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 t\u1ea1o c\u00e1c \u0111\u01b0\u1eddng ki\u1ec3m th\u1eed nh\u1eb1m \u0111\u1ea3m b\u1ea3o m\u1ecdi nh\u00e1nh logic \u0111\u1ec1u \u0111\u01b0\u1ee3c th\u1ef1c thi (ph\u1ee7 nh\u00e1nh).<\/p>\n

              Suy ngh\u0129 cu\u1ed1i c\u00f9ng v\u1ec1 chi\u1ebfn l\u01b0\u1ee3c m\u00f4 h\u00ecnh h\u00f3a \ud83e\udd14<\/h2>\n

              Vi\u1ec7c l\u1ef1a ch\u1ecdn gi\u1eefa s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng kh\u00f4ng ch\u1ec9 l\u00e0 m\u1ed9t l\u1ef1a ch\u1ecdn phong c\u00e1ch; \u0111\u00f3 l\u00e0 m\u1ed9t quy\u1ebft \u0111\u1ecbnh chi\u1ebfn l\u01b0\u1ee3c \u1ea3nh h\u01b0\u1edfng \u0111\u1ebfn \u0111\u1ed9 r\u00f5 r\u00e0ng v\u00e0 kh\u1ea3 n\u0103ng b\u1ea3o tr\u00ec thi\u1ebft k\u1ebf h\u1ec7 th\u1ed1ng c\u1ee7a b\u1ea1n. B\u1eb1ng c\u00e1ch hi\u1ec3u r\u00f5 c\u00e1c kh\u1ea3 n\u0103ng ri\u00eang bi\u1ec7t c\u1ee7a t\u1eebng lo\u1ea1i, b\u1ea1n \u0111\u1ea3m b\u1ea3o r\u1eb1ng c\u00e1c m\u00f4 h\u00ecnh c\u1ee7a m\u00ecnh truy\u1ec1n \u0111\u1ea1t \u0111\u00fang th\u00f4ng tin \u0111\u1ebfn \u0111\u00fang \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n

              S\u01a1 \u0111\u1ed3 lu\u1ed3ng cung c\u1ea5p b\u1ea3n \u0111\u1ed3 h\u00e0nh tr\u00ecnh cho c\u00e1c quy tr\u00ecnh, \u0111\u1ecbnh h\u01b0\u1edbng lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n qua c\u00e1c c\u1ed5ng logic. S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i cung c\u1ea5p b\u1ea3n v\u1ebd thi\u1ebft k\u1ebf cho h\u00e0nh vi, \u0111\u1ea3m b\u1ea3o c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng lu\u00f4n t\u1ed3n t\u1ea1i \u1edf tr\u1ea1ng th\u00e1i h\u1ee3p l\u1ec7 v\u00e0 ph\u1ea3n \u1ee9ng \u0111\u00fang \u0111\u1eafn v\u1edbi th\u1ebf gi\u1edbi xung quanh. L\u00e0 m\u1ed9t nh\u00e0 ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng, kh\u1ea3 n\u0103ng ph\u00e2n bi\u1ec7t v\u00e0 \u00e1p d\u1ee5ng ch\u00ednh x\u00e1c c\u00e1c c\u00f4ng c\u1ee5 n\u00e0y s\u1ebd \u0111\u1ecbnh ngh\u0129a ch\u1ea5t l\u01b0\u1ee3ng c\u00f4ng vi\u1ec7c ki\u1ebfn tr\u00fac c\u1ee7a b\u1ea1n.<\/p>\n

              T\u1eadp trung v\u00e0o b\u1ea3n ch\u1ea5t c\u1ee7a v\u1ea5n \u0111\u1ec1 b\u1ea1n \u0111ang gi\u1ea3i quy\u1ebft. \u0110\u00f3 l\u00e0 m\u1ed9t h\u00e0nh tr\u00ecnh? H\u00e3y d\u00f9ng s\u01a1 \u0111\u1ed3 lu\u1ed3ng. \u0110\u00f3 l\u00e0 m\u1ed9t chu k\u1ef3 s\u1ed1ng? H\u00e3y d\u00f9ng s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i. V\u1edbi th\u1ef1c h\u00e0nh, s\u1ef1 ph\u00e2n bi\u1ec7t n\u00e0y s\u1ebd tr\u1edf n\u00ean tr\u1ef1c gi\u00e1c, gi\u00fap b\u1ea1n m\u00f4 h\u00ecnh h\u00f3a c\u00e1c h\u1ec7 th\u1ed1ng ph\u1ee9c t\u1ea1p m\u1ed9t c\u00e1ch ch\u00ednh x\u00e1c v\u00e0 r\u00f5 r\u00e0ng.<\/p>\n","protected":false},"excerpt":{"rendered":"

              Ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng ph\u1ee5 thu\u1ed9c r\u1ea5t nhi\u1ec1u v\u00e0o m\u00f4 h\u00ecnh h\u00f3a tr\u1ef1c quan \u0111\u1ec3 truy\u1ec1n \u0111\u1ea1t logic ph\u1ee9c t\u1ea1p \u0111\u1ebfn c\u00e1c b\u00ean li\u00ean quan v\u00e0 nh\u00e0 ph\u00e1t tri\u1ec3n. Tuy…<\/p>\n","protected":false},"author":1,"featured_media":778,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_yoast_wpseo_title":"S\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i so v\u1edbi s\u01a1 \u0111\u1ed3 lu\u1ed3ng: H\u01b0\u1edbng d\u1eabn cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng","_yoast_wpseo_metadesc":"H\u1ecdc c\u00e1c \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. Hi\u1ec3u v\u1ec1 m\u00e1y tr\u1ea1ng th\u00e1i, lu\u1ed3ng \u0111i\u1ec1u khi\u1ec3n v\u00e0 c\u00e1c k\u1ef9 thu\u1eadt m\u00f4 h\u00ecnh h\u00f3a UML.","fifu_image_url":"","fifu_image_alt":"","footnotes":""},"categories":[35],"tags":[40,41],"class_list":["post-777","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-uml","tag-academic","tag-state-machine-diagram"],"yoast_head":"\nS\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i so v\u1edbi s\u01a1 \u0111\u1ed3 lu\u1ed3ng: H\u01b0\u1edbng d\u1eabn cho ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng<\/title>\n<meta name=\"description\" content=\"H\u1ecdc c\u00e1c \u0111i\u1ec3m kh\u00e1c bi\u1ec7t ch\u00ednh gi\u1eefa s\u01a1 \u0111\u1ed3 tr\u1ea1ng th\u00e1i v\u00e0 s\u01a1 \u0111\u1ed3 lu\u1ed3ng trong ph\u00e2n t\u00edch h\u1ec7 th\u1ed1ng. 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