Secondly, schema validation adds type annotations from the schema to each XML element and attribute, and these types get persisted in DB2s XML storage.

其次，模式验证将来自模式的类型注释添加到每个xml元素和属性，这些类型在DB 2 XML存储中得到持久化。

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Instead, it requires the developer only to denote the attributes to be persisted and to identify the attribute to represent the object's unique identifier (or primary key).

相反，它只需要程序员将属性标记为持久性的，并识别出能代表对象唯一标识符(或者主键)的属性。

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If the business relevant attribute is set for an activity, the activity instance is always persisted.

如果为一个活动设置与业务相关的属性，那么该活动实例就会一直持续下去。

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