首先,对于清单2中的数据,我需要模拟出一个描述,记录下对于这些数据我可能要说的内容。
First, I need to mock up a description of what I might want to say about the data in Listing 2.
如果你的数据库包含敏感信息,您可能希望限制对编目视图的访问,因为编目描述了数据库中的每一个对象。
If your database contains sensitive data, you might want to limit access to the catalog views, because the catalog describes every object in the database.
属性应当用来描述如何解释数据元素,或描述关于数据元素的信息—换句话说,属性是一种元数据。
Attributes should be used to describe how to interpret data elements, or describe something about them — in other words, attributes are a form of metadata.
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