... 简单纯关系语言 relational language 复杂的纯关系语言 relational languages 复杂的混合关系语言 relational languages ...
基于8个网页-相关网页
complex pure-relational languages 复杂的纯关系语言
complex mixed-relational languages 复杂的混合关系语言
The Relational Model and Languages 第二部分
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