Null is not null

重新建了一下blog的分类，使其更能反映自己现在接触的东西。

把自己认为有用的东西整理在这里，也争取能把自己的一些体会，整理一下，记在这里。

Change Data Capture efficiently identifies and captures data that has been added to, updated in, or removed from, Oracle relational tables and makes this change data available for use by applications or individuals. Change Data Capture is provided as a database component beginning with Oracle9i. 查看全文