The data models were supported by business glossaries that provided the detail definitions of each attribute and domains of valid values where needed.
数据模型由一个业务术语表支持，这个术语表提供每个属性和领域的详细定义，包括有效值。
The class attribute in domains specialization.
领域专门化中的class属性。
Define the domains attribute of the topic elements to declare the domains represented in the document.
定义主题元素的domains属性来声明文档中所表示的域。
While the class attribute identifies base elements, the domains attribute identifies the domains available within a topic.
class属性标识基本元素，而domains属性标识主题内可用的域。
Each domain provides a domain identification entity to identify itself in the domains attribute.
每个域都提供一个域标识实体来在domains属性中标识自己。
When you create a domains specialization, the new elements still need a class attribute, but should start with a "+" instead of a "-".
创建领域专门化时，新元素仍然需要class属性，但是应该以“+”而不是“-”开始。
When you create a domains specialization, the new elements still need a class attribute, but should start with a "+" instead of a "-".
创建领域专门化时，新元素仍然需要class属性，但是应该以“+”而不是“-”开始。
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