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内模式又称( )模式,具体描述了数据是如何( )在存储介质上的,故称内模式为( )视图。
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中级数据库系统工程师《填空》真题及答案
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数据视图的描述称为
外模式
内模式
概念模式
存储模式
数据库中全体数据的整体逻辑结构描述成为
存储模式
内模式
外模式
概念模式
描述数据库中全体数据的逻辑结构和特征的是
存储模式
B.内模式
C.外模式
D.模式
数据库系统的三级模式结构中描述数据物理结构和存储方式的是
内模式
模式
外模式
存储模式
内模式又称存储模式一个数据库只有一个内模式
数据库的三级模式结构中描述数据库中全体数据的逻辑结构和特征的是
外模式
模式
存储模式
内模式
在数据库的三级模式结构中描述数据库中全体数据的全局逻辑结构和特性的是______
外模式
内模式
存储模式
模式
在关系数据库中关于外模式的描述正确的是______
外模式又称逻辑模式
外模式又称存储模式
外模式又称为子模式或用户模式
外模式描述数据的物理结构和存储结构
描述数据库中全体数据的逻辑结构和特征的是
存储模式
内模式
外模式
模式
面向具体的应用程序的数据库模式是
外模式
内模式
模式
存储模式
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