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Re:UML建模与数据库设计的问题 [Re:p96114]

chaos

We Are the World !!

发贴: 92
积分: 40

于 2003-03-03 01:15

This is an O/R mapping like questions.
There are five strategies you can adopt :

1.Top-down: Start with an existing JavaBeans object model, develop a mapping that maps those objects to tables in your database, generate DDL to create your database, and then use a persistance API to persist those objects to that database.

2.Bottom-up: Start with an existing database schema, describe your database schema using using XML or some other meta-data representation, generate your JavaBeans object model, optionally add business logic to those objects, and use a persistence API to store and retrieve your objects.

3.Middle-out: Start with a meta-data description of your object model, generate your JavaBeans object model, generate DDL to create your dataBase, and use a persistence API to store and retrieve your objects.

4.Meet-in-the-middle: Start with an existing database schema and an existing JavaBeans object model, develop a mapping to map between the two, and use a persistence API to store and retrieve your objects.

5.Generic-object: Start with a meta-data description of your desired database schema, generate DDL to create your database, and use a persistence API to store and retrieve generic data objects, with values stored as a hash of name-value pairs, to and from your database.

话题树型展开

人气	标题	作者	字数	发贴时间
7094	UML建模与数据库设计的问题	p96114	92	2003-02-27 21:16
6694	Re:UML建模与数据库设计的问题	fly2fire	45	2003-02-28 09:22
6038	Re:UML建模与数据库设计的问题	p96114	47	2003-02-28 09:27
6127	Re:UML建模与数据库设计的问题	floater	20	2003-03-01 05:12
6000	Re:UML建模与数据库设计的问题	frenzieddragon	80	2003-03-03 12:15
6458	Re:UML建模与数据库设计的问题	chaos	1309	2003-03-03 01:15
7175	Re:UML建模与数据库设计的问题	HenryYu	85	2003-03-04 09:32

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