为此产生了一整套称为orm的程序，用来缓解在数据库和面向对象的代码之间来回转移数据的痛苦。
A whole class of programs - ORMs - has sprouted up to ease the pain of moving data back and forth between databases and your code.
与关系数据库相比，面向对象模型支持更丰富的关系
Richer relationships allowed by object orientation that aren't supported by relational databases
注意数据的规范化在任何面向数据库的应用程序中都是标准实践。
Note that normalization is standard practice in any database-oriented application.
应用推荐