relational completeness造句

例句与造句

1. The expressive power of xquery is comparable to the criterion of relational completeness " defined for database query languages , though no such formal standard has been defined for an xml data model
   Xquery的表达能力可以与为数据库查询语言定义的“关系完整性”标准相比，虽然还没有为xml数据模型定义这样的正式标准。
2. It's difficult to find relational completeness in a sentence. 用relational completeness造句挺难的