- （函数依赖）：描述表中列之间的关系。
- 功能相关性
- 函数相关性
- 函数依赖
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functional dependency中文什么意思
例句与用法
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- Evaluation to candidate keys by functional dependencies in the database
数据库中利用函数依赖求解候选码的方法 - Unique , primary key , referential , check , and functional dependency constraints are supported
惟一约束、主键约束、参照约束、检查约束和函数依赖约束在这里都受支持。 - A normalized database prevents functional dependencies in the data so that updating the database is easy and efficient
规范化的数据库可防止数据存在功能相关性，以便轻松、高效地更新数据库。 - Abstract : the functional dependency and multiple valued dependency in the relational database with null values are discussed . and the related defintions ， rules and laws are given
文摘:讨论了含空值关系数据库中函数与多值依赖,并给出了有关的定义、规则与定理 - The main research work is to make use of concept lattice structure to solve the problem of mining association rules , classification rules , and functional dependencies from data
研究工作的重点是使用概念格结构模型对关联规则、分类规则和函数依赖的发现问题进行求解。
百科释义
In relational database theory, a functional dependency is a constraint between two sets of attributes in a relation from a database.
详细百科解释