functional dependency

功能依赖:在数据库理论中

常用释义

词性释义

功能依赖:在数据库理论中,一种表示一个属性集合对另一个属性集合的确定性依赖关系。
例句
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1·And a set of complete inference rules about XML functional dependency is given.
然后给出了关于XML文档的函数依赖的一组完备的推理规则集。
2·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。
3·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。
4·Functional dependency is an important semantic representation both in relational databases and XML documents.
函数依赖对关系数据库和XML文档都是一种重要的语义表达。
5·Finally, the relation between functional dependency and keys for XML documents are also studied in this part.
最后还进一步研究了XML文档的函数依赖和键的关系。
6·The functional dependency theory has a great influence over the design and application of relational database.
FD理论对于关系数据库的设计和应用产生了深刻的影响。
7·There are two forms of functional dependency: absolute functional dependency and relative functional dependency.
它可以有两种不同类型的表现形式:绝对函数依赖和相对函数依赖。
8·The inferable theorem is discussed under the mixed circumstances under fuzzy functional dependency and fuzzy multivalued dependency.
讨论了在模糊函数依赖、模糊多值依赖混合作用下的推导公理系统;
9·According to a group of deduce rules about XML functional dependency, we expand the FD-Set to avoid losing semantics of original XML.
该算法以键为基础,根据XML函数依赖的一组推理规则,扩充函数依赖的集合,避免XML模式向关系模式转换过程中语义丢失的情况;
10·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。