OODBMS识别出查询受到子类型Employee的显式约束，并且只选择了符合返回条件的对象。
Implicitly, the OODBMS has recognized that the query is constrained explicitly by the subtype Employee, and has only selected those objects that fit that criteria for return.
对象没有固有的约束，因此要实现数据验证，必须进行显式编码。
Objects have no inherent constraints, so explicit coding is required to implement the data validation.
SOA与其他体系结构不同，因为它显式地处理了企业很多的非技术约束。
SOA can be distinguished from other architectures since it explicitly addresses many of the enterprises' nontechnical constraints.
应用推荐