... 泛光灯;洪光灯 flooding light 泛关系 universal relation 泛光灯柱 floodlight mast ...
基于20个网页-相关网页
·2,447,543篇论文数据,部分数据来源于NoteExpress
泛关系模型的目的在于获得完全的存取路径独立性。
The universal relation model aims at achieving the complete access path independence.
在函数依赖情况下,用图示方法分析关系模式的分解情况,探讨数据库实例和泛关系的联系。
In the case where only FDs are concerned, decompositions of relational schema are examined with diagrams. The relationship between database instances and universal relations is also investigated.
应用推荐