最小函数依赖是数据库模式分解的基础。
Least Function Dependence is the basis of decomposing Database pattern.
介绍了一种发现最小函数依赖集的方法。
An efficient method is introduced for discovering minimal functional dependencies from large database.
不存在非主属性对任一候选键滴部分函数依赖。
No non-prime attribute in the table is functionally dependent on a part (proper subset) of a candidate key.
优化器将根据行中列的函数依赖性来推断关键值选择。
The optimizer will deduce key value selection based on the functional dependency of the column within the row.
最后还进一步研究了XML文档的函数依赖和键的关系。
Finally, the relation between functional dependency and keys for XML documents are also studied in this part.
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。
Functional dependency is an important semantic representation both in relational databases and XML documents.
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。
And a set of complete inference rules about XML functional dependency is given.
XML文档中可能包含由非函数依赖引起的数据冗余和操作异常。
XML documents may contain data redundancies and operation anomalies due to non-functional dependencies.
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。
There are two forms of functional dependency: absolute functional dependency and relative functional 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；
The inferable theorem is discussed under the mixed circumstances under fuzzy functional dependency and fuzzy multivalued dependency.
在函数依赖的范畴内对关系模型的规范化理论及其运用问题进行了探讨。
Within the category of function dependency, the theory and application of normalization of relation model are studied.
在函数依赖的范畴内对关系模型的规范化理论及其运用问题进行了探讨 。
This paper brings forward a method of graphical standardization of relation schema based on function dependence diagram.
本文给出了空值环境下的完全函数依赖的弱保持、强保持及部分函数依赖。
The weak and strong holds of Full Functional Dependencies and Part Functional Dependencies under the null values environment are proposed in this paper.
基于带状划分数据库的发现函数依赖集的方法这种方法基于一致集的概念。
A method for discovering functional dependencies based on the stripped partition database This efficient method is based on the concept of agree sets.
编码后的DTD能在线性时间内对XML函数依赖的逻辑蕴涵问题进行判定。
Coding DTD can test the logical implication problem of XML function dependency in linear time.
上述参数与给药剂量间有明确的函数依赖关系（P＜005～P＜001）。
The above-mentioned parameters bore a clear functional dependence on the dosage of medication(P<0 05~P<0 01).
文中讨论了闭包算法在函数依赖投影求解以及基于BCNF的关系分解中的应用。
The article discussed the applications of the closure algorithm to solve the problem of the functional dependency projection, and the relation decomposition based on BCNF.
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。
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.
在函数依赖情况下，用图示方法分析关系模式的分解情况，探讨数据库实例和泛关系的联系。
In the case where only FDs are concerned, decompositions of relational schema are examined with diagrams. The relationship between database instances and universal relations is also investigated.
以函数依赖理论为基础，提出了属性依赖理论，阐述了属性依赖的有关定义，证明了相关定理；
The article put forward the attribute dependency theory based on functional dependency theory, elaborated the definition of the attribute dependency theory, and proved related theorem.
为了发现粗糙关系数据库中潜在的和有趣的模式，提出并研究了粗糙函数依赖的近似度量和精确度量。
The accurate and approximate measures of rough functional dependency are proposed in this paper in order to find potential and interesting patterns for rough relational database.
逻辑结构设计包括函数依赖和关系规范化的理论分析、E - R模型向关系模型的转换和数据模式规范化。
The logic framework structured design is consisted of theory analysis of function dependency, relation normalization, transformation from E-R model to relation model and data model normalization.
为了有效地解决XML函数依赖的蕴涵问题，该文提出了一种DTD路径编码机制，对它的性质进行了分析。
In the paper, in order to solve the implication of XML function dependency, a path coding method of DTD is presented, and its characters are analyzed.
本文研究关系数据库理论中空值在函数依赖中的语义问题，提出了带标志空值的关系中函数依赖的三种定义。
This paper deals with the semantics of null values in functional dependencies in database theory, and presents three different definitions of FDs in a single relation with marked nulls.
在给定关系模式的属性集及其函数依赖最小覆盖集的基础上，提出一种基于模式图的规范化XML模式设计方法。
Given attribute set and minimum cover set of functional dependencies over one relational schema, a new method for designing normalized XML schemas based on schema graph is proposed.
给出了关系数据模式分解中，既有无损连接性又保持函数依赖的分解算法，并用该算法指导应用软件的开发工作。
This paper gives a dissolution algorithm on relational data model system which has a lossless join and remains function dependency as well.
着重讨论了当一个属性既出现于函数依赖的左部，又出现于函数依赖的右部时成为主属性的必要条件和充分条件。
The essential and full condition that an attribute being a primary attribute when it appears in both the left and the right of Functional Dependencies are discussed.
当XML文档出现不完全信息时，XML函数依赖同样对于XML文档的键、规范化和完整性约束的研究具有重要意义。
When XML document comes forth incomplete information, XML functional dependency has also important meaning for the research of key, normal form and integral restriction for XML document.
这个函数依赖于简单的servlet来获取HTML片段(转换后的XML)，并动态地使用该HTML片段替换DIV标记中的内容。
This function relies on the simple servlet to obtain the HTML fragment (which is transformed XML) and dynamically replace the contents of a DIV tag with that HTML fragment.
给出了XML函数依赖、部分函数依赖和传递函数依赖的概念，然后据此提出了三种XML范式：1XNF、2 XNF和3XNF。
This paper presents three XML norm forms:1XNF, 2XNF, and 3XNF based on the concepts of functional dependency, partial functional dependency and transitive functional dependency for XML DTDs.
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