在您创建oneviewcontroller类时，您定义了实例变量来管理视图组件。

When you created the OneViewController class, you defined instance variables to manage the view components. These variables are.

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这是必要的，因为您需要定义许多方法来管理所有必要的表视图操作。

This is necessary because you need to define many methods to manage all the necessary table view actions.

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可以使用系统编目视图来检索关于表空间之类的存储管理对象的信息。

You can use the system catalog views to retrieve information about storage management objects such as table Spaces.

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