Change the type of a Stereotype or Class attribute that existed in the previous version.

变更stereotype的类型或者存在于先前版本中的class属性。

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A specialized type does not need to change the class attribute for elements that it does not specialize, but simply reuses by reference from more generic levels.

专门化类型不一定要改变未专门化元素的class属性，值需要通过引用更一般的层级重用。

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Rename the second attribute to DESCRIPTION and change its data type to VARCHAR (1024).

将第二个属性重新命名为DESCRIPTION，并将它的数据类型改为VARCHAR (1024)。

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