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
Functional Dependency的英文发音
例句
- A set of inference rules for XML weak functional dependency was presented and its soundness and completeness were given.
- 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。
- 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.
- 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。
- The optimizer will deduce key value selection based on the functional dependency of the column within the row.
- 优化器将根据行中列的函数依赖性来推断关键值选择。
- 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。
- The tool will find the deployment order, based on the functional dependency of each resource, for you.
- 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。
本站英语缩略词为个人收集整理,可供非商业用途的复制、使用及分享,但严禁任何形式的采集或批量盗用
若FD词条信息存在错误、不当之处或涉及侵权,请及时联系我们处理:675289112@qq.com。