| 术语 | transitive dependence |
| 释义 | transitive dependence 传递依赖性 In relational databases, an indirect dependence between attributes. Suppose A, B and C are three attributes or distinct collections of attributes of a relation R. If C is functionally dependent on B and B is functionally dependent on A the n C is functionally dependent on A, if A is not functionally upon B or B is not functionally dependent on C then C is transitively dependent upon A. 在关系数据库中，两种属性之间的一种间接依赖性。设A，B，C是关系R的三种属性或属性集 合，如果C在函数上依赖于B，B依赖于A，则C依赖于A；如果A在函数上不依赖于B，或B不依 赖于C，则C传递性地依赖于A。 参阅functional dependence。 |
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