{"id":17948,"date":"2021-06-05T23:10:44","date_gmt":"2021-06-05T16:10:44","guid":{"rendered":"https:\/\/pixabu.com\/?p=17948"},"modified":"2021-06-05T23:10:44","modified_gmt":"2021-06-05T16:10:44","slug":"cong-nghe-thong-tin-mo-hinh-3-tier-va-3-layer","status":"publish","type":"post","link":"https:\/\/pixabu.com\/en\/cong-nghe-thong-tin-mo-hinh-3-tier-va-3-layer\/","title":{"rendered":"C\u00f4ng ngh\u1ec7 th\u00f4ng tin: M\u00f4 H\u00ecnh 3 Tier v\u00e0 3 layer"},"content":{"rendered":"
Nhi\u1ec1u b\u1ea1n sinh vi\u00ean ng\u00e0nh CNTT nh\u1ea7m l\u1eabn gi\u1eefa m\u00f4 h\u00ecnh 3 tier v\u00e0 3 layer. Tuy nhi\u00ean, th\u1ef1c t\u1ebf ch\u00fang ho\u00e0n to\u00e0n kh\u00e1c nhau. B\u00e0i vi\u1ebft sau \u0111\u00e2y chia s\u1ebb gi\u00fap c\u00e1c b\u1ea1n ph\u00e2n bi\u1ec7t gi\u1eefa 3 Tier v\u00e0 3 layer.<\/em><\/strong><\/p>\n Theo wikipedia: 3-tiers l\u00e0 m\u1ed9t ki\u1ebfn tr\u00fac ki\u1ec3u client\/server m\u00e0 trong \u0111\u00f3, c\u00e1c y\u1ebfu t\u1ed1 nh\u01b0:<\/p>\n L\u00e0 nh\u1eefng y\u1ebfu t\u1ed1 \u0111\u01b0\u1ee3c duy tr\u00ec tr\u00ean c\u00e1c n\u1ec1n t\u1ea3ng \u0111\u1ed9c l\u1eadp. M\u00f4 h\u00ecnh 3 t\u1ea7ng (3-tiers) \u0111\u01b0\u1ee3c coi l\u00e0 m\u1ed9t ki\u1ebfn tr\u00fac ph\u1ea7n m\u1ec1m v\u00e0 l\u00e0 m\u1ed9t m\u1eabu thi\u1ebft k\u1ebf.<\/p>\n 3 Tier g\u1ed3m 03 th\u00e0nh ph\u1ea7n ch\u00ednh:<\/p>\n \u01afu \u0111i\u1ec3m: <\/strong>D\u1ec5 d\u00e0ng m\u1edf r\u1ed9ng, thay \u0111\u1ed5i quy m\u00f4 c\u1ee7a h\u1ec7 th\u1ed1ng: Khi c\u1ea7n t\u1ea3i l\u1edbn, ng\u01b0\u1eddi qu\u1ea3n tr\u1ecb c\u00f3 th\u1ec3 d\u1ec5 d\u00e0ng th\u00eam c\u00e1c m\u00e1y ch\u1ee7 v\u00e0o nh\u00f3m, ho\u1eb7c l\u1ea5y b\u1edbt ra trong tr\u01b0\u1eddng h\u1ee3p ng\u01b0\u1ee3c l\u1ea1i.<\/p>\n Nh\u01b0\u1ee3c \u0111i\u1ec3m:<\/strong><\/p>\n \u2013 Presentation Layer (GUI):<\/strong> L\u1edbp n\u00e0y c\u00f3 nhi\u1ec7m v\u1ee5 ch\u00ednh giao ti\u1ebfp v\u1edbi ng\u01b0\u1eddi d\u00f9ng. N\u00f3 g\u1ed3m c\u00e1c th\u00e0nh ph\u1ea7n giao di\u1ec7n ( win form, web form,\u2026) v\u00e0 th\u1ef1c hi\u1ec7n c\u00e1c c\u00f4ng vi\u1ec7c nh\u01b0 nh\u1eadp li\u1ec7u, hi\u1ec3n th\u1ecb d\u1eef li\u00eau, ki\u1ec3m tra t\u00ednh \u0111\u00fang \u0111\u1eafn d\u1eef li\u1ec7u tr\u01b0\u1edbc khi g\u1ecdi l\u1edbp Business Logic Layer (BLL).<\/p>\n \u2013 Business Logic Layer (BLL):<\/strong> Layer n\u00e0y ph\u00e2n ra 2 th\u00e0nh nhi\u1ec7m v\u1ee5 :<\/p>\n \u2013 Data Access Layer (DAL):<\/strong> L\u1edbp n\u00e0y c\u00f3 ch\u1ee9c n\u0103ng giao ti\u1ebfp v\u1edbi h\u1ec7 qu\u1ea3n tr\u1ecb CSDL nh\u01b0 th\u1ef1c hi\u1ec7n c\u00e1c c\u00f4ng vi\u1ec7c li\u00ean quan \u0111\u1ebfn l\u01b0u tr\u1eef v\u00e0 truy v\u1ea5n d\u1eef li\u1ec7u ( t\u00ecm ki\u1ebfm, th\u00eam, x\u00f3a, s\u1eeda,\u2026).<\/p>\n M\u1eb7c d\u00f9 c\u1ea5u tr\u00fac ph\u00e2n chia gi\u1ed1ng nhau (presentation, bussiness , data). Tuy nhi\u00ean ch\u00fang ho\u00e0n to\u00e0n kh\u00e1c nhau. N\u1ebfu 3 tiers c\u00f3 t\u00ednh v\u1eadt l\u00ed th\u00ec 3 layer c\u00f3 t\u00ednh logic. Ngh\u0129a l\u00e0 ta ph\u00e2n chia \u1ee9ng d\u1ee5ng th\u00e0nh c\u00e1c ph\u1ea7n (c\u00e1c l\u1edbp) theo ch\u1ee9c n\u0103ng ho\u1eb7c vai tr\u00f2 m\u1ed9t c\u00e1ch logic. C\u00e1c layer kh\u00e1c nhau \u0111\u01b0\u1ee3c th\u1ef1c thi trong 1 ph\u00e2n v\u00f9ng b\u1ed9 nh\u1edb c\u1ee7a process. V\u00ec th\u1ebf n\u00ean m\u1ed9t tier c\u00f3 th\u1ec3 c\u00f3 nhi\u1ec1u layer.<\/p>\n > \u0110\u1ea1i h\u1ecdc Ph\u00fa Xu\u00e2n tuy\u1ec3n sinh ng\u00e0nh C\u00f4ng ngh\u1ec7 Th\u00f4ng tin<\/a><\/p>\n > Overview of 09 Trendy Training Programs at Phu Xuan University\"<\/a><\/p>\n1. M\u00f4 h\u00ecnh 3 Tier<\/strong><\/h3>\n
1.1 M\u00f4 h\u00ecnh 3 Tier l\u00e0 g\u00ec?<\/strong><\/h5>\n
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1.2 C\u00e1c ph\u00e0nh ph\u1ea7n c\u1ee7a 3 Tier<\/strong><\/h5>\n
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1.3. \u01afu \u0111i\u1ec3m v\u00e0 nh\u01b0\u1ee3c \u0111i\u1ec3m m\u00f4 h\u00ecnh 3 Tier<\/strong><\/h5>\n
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2. M\u00f4 h\u00ecnh 3 layer ( 3 l\u1edbp)<\/strong><\/h3>\n
2.1 M\u00f4 H\u00ecnh 3 layer l\u00e0 g\u00ec ?<\/strong><\/h5>\n
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2.2. C\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a m\u00f4 h\u00ecnh 3 l\u1edbp<\/strong><\/h5>\n
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2.3. \u01afu \u0111i\u1ec3m khi s\u1eed d\u1ee5ng m\u00f4 h\u00ecnh 3 l\u1edbp<\/strong><\/h5>\n
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T\u00f3m l\u1ea1i:<\/strong><\/h3>\n
See more<\/h5>\n
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