如果您决定以后拥有一个功能更丰富的数据库，您必须更改应用程序中的代码。
If you decide to have a more feature-rich database later, you will have to change the code in your application.
这些视图中收藏了丰富的有用信息，其中包括可以帮助您理解数据库如何运行的信息。
There is a wealth of useful information tucked away in these views, information that can help you to understand how your database operates.
数据库也通过卖数据给学院获得丰富资金。
The database also gives them a vast pool to sell to academics.
应用推荐