| 释义 |
fully functional dependent
全函数相关
In database, a collection of attributes A of a relation R is fully functionally dependent on another collection of attributes B of relation R if A is functionally dependent on the whole of B but not on any subset of B.
数据库中,关系R的一属性组A全函数相关于关系R的另一属性组B的条件是:A函数相关于 B的整体,而非B的任一子集。 |