FD:功能依赖性

“函数依赖”是关系数据库理论中的一个核心概念,常简称为FD(Functional Dependency),以方便书写和学术交流。这一术语主要用于数学和计算机科学领域,用于描述数据属性之间的约束关系,即一个属性的取值可以唯一确定另一个属性的取值。理解函数依赖对于数据库设计和数据规范化至关重要。

Functional Dependency具体释义

  • 英文缩写:FD
  • 英语全称:Functional Dependency
  • 中文意思:功能依赖性
  • 中文拼音:gōng néng yī lài xìng
  • 相关领域fd 数学

Functional Dependency的英文发音

例句

  1. A set of inference rules for XML weak functional dependency was presented and its soundness and completeness were given.
  2. 提出了相应的推理规则集,并对其正确性和完备性进行了证明。
  3. In this paper, we give the two approaches of the definition of XML functional dependency, in which one is based on tree tuples and the other is based on path.
  4. 本文给出了基于树元组的XML函数依赖和基于路径的XML函数依赖的两种定义方法。
  5. The optimizer will deduce key value selection based on the functional dependency of the column within the row.
  6. 优化器将根据行中列的函数依赖性来推断关键值选择。
  7. Unique, primary key, referential, check, and functional dependency constraints are supported.
  8. 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。
  9. The tool will find the deployment order, based on the functional dependency of each resource, for you.
  10. 该工具会根据资源之间的功能依赖关系来帮您决定部署顺序。