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作者 Re:CRUD vs Use Case... [Re:Biologic]
singlelog

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發文: 416
積分: 6
於 2004-02-14 01:53 user profilesend a private message to usersend email to singlelogreply to postreply to postsearch all posts byselect and copy to clipboard. 
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Biologic wrote:
不好意思 下面看不太懂.... 可不可以請你解釋一下...

ok.

用OOD, OOP的好處中,有一個是說當我們OO做得好的話,對於不斷變動的requirement來說,會比較有辦法去對付。整體的implementation cost會比較低,諸如此類的聽過就不太記得了。

大多數人聽起來,都覺得這個東西言之成理。我們把東西封裝起來,所以只要interface保持一樣,其實implementation的方式,可以怎麼修正都行。

可是完全採用OOAD開發的人,因為花在推敲data model的時間較少,通常在db方面的design就會比較容易忽略掉一些小地方。有些應該是master - detail的table,把資訊放在同一個table的狀況還蠻常見的。類似這樣的變動呢,如果發現的時間不湊巧,其實代價是很高的。很多人就把它歸功於這是OOAD的好處,你看,它可以handle change requests。不過這種change request,如果用structure analysis來開發的話,有可能根本就不會發生。因為structure analysis的重心就是data modeling。

當然,如果SA跟user都很笨的話,用那種方式開發就都一樣...這好像是句廢話。Big Smile


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話題樹型展開
人氣 標題 作者 字數 發文時間
5826 CRUD vs Use Case... JustJava 315 2004-02-04 16:09
4704 Re:CRUD vs Use Case... singlelog 649 2004-02-09 11:07
4597 Re:CRUD vs Use Case... Biologic 1214 2004-02-09 12:18
4511 Re:CRUD vs Use Case... Biologic 569 2004-02-09 12:23
4561 Re:CRUD vs Use Case... singlelog 820 2004-02-09 16:32
4476 Re:CRUD vs Use Case... Biologic 276 2004-02-09 17:03
4479 Re:CRUD vs Use Case... Biologic 392 2004-02-09 12:21
4452 Re:CRUD vs Use Case... JustJava 423 2004-02-09 17:20
4433 Re:CRUD vs Use Case... Biologic 595 2004-02-09 17:37
4414 Re:CRUD vs Use Case... singlelog 618 2004-02-09 18:48
4391 Re:CRUD vs Use Case... JustJava 369 2004-02-10 08:49
4432 Re:CRUD vs Use Case... singlelog 480 2004-02-10 12:10
4363 Re:CRUD vs Use Case... Biologic 655 2004-02-10 13:07
4395 Re:CRUD vs Use Case... singlelog 1125 2004-02-12 12:38
4327 Re:CRUD vs Use Case... JustJava 325 2004-02-10 14:11
4356 Re:CRUD vs Use Case... singlelog 452 2004-02-10 16:22
4315 Re:CRUD vs Use Case... Biologic 135 2004-02-10 16:50
4367 Re:CRUD vs Use Case... singlelog 899 2004-02-12 12:12
4351 Re:CRUD vs Use Case... Biologic 1093 2004-02-12 13:08
4450 Re:CRUD vs Use Case... singlelog 1722 2004-02-12 16:26
4377 Re:CRUD vs Use Case... Biologic 1101 2004-02-12 17:06
4334 Re:CRUD vs Use Case... JustJava 795 2004-02-12 18:38
4277 Re:CRUD vs Use Case... Biologic 163 2004-02-12 18:57
4263 Re:CRUD vs Use Case... JustJava 119 2004-02-13 08:58
4248 Re:CRUD vs Use Case... Biologic 100 2004-02-13 12:21
4301 Re:CRUD vs Use Case... singlelog 1052 2004-02-12 21:47
4436 Re:CRUD vs Use Case... qing 260 2004-02-13 10:17
4329 Re:CRUD vs Use Case... singlelog 1323 2004-02-13 13:33
4239 Re:CRUD vs Use Case... Biologic 655 2004-02-13 13:56
4284 Re:CRUD vs Use Case... singlelog 600 2004-02-14 01:53
4307 Re:CRUD vs Use Case... Biologic 1158 2004-02-14 02:47
4259 Re:CRUD vs Use Case... singlelog 1165 2004-02-14 03:31
4425 Re:CRUD vs Use Case... Biologic 379 2004-02-14 12:31
4229 Re:CRUD vs Use Case... Biologic 88 2004-02-13 13:50
4291 Re:CRUD vs Use Case... qing 89 2004-02-13 14:26
4261 Re:CRUD vs Use Case... Biologic 1403 2004-02-13 12:36
4300 Re:CRUD vs Use Case... JustJava 1492 2004-02-13 13:14
4292 Re:CRUD vs Use Case... Biologic 714 2004-02-13 13:44
4295 Re:CRUD vs Use Case... qing 259 2004-02-13 14:30
4255 Re:CRUD vs Use Case... JustJava 138 2004-02-13 15:55
4278 Re:CRUD vs Use Case... Biologic 60 2004-02-13 13:34
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