XML数据库的语义查询公式和计算

Proceedings of the Third International Conference on Web Information Systems Engineering, 2002. WISE 2002. Pub Date : 2002-12-12 DOI:10.1109/WISE.2002.1181657

Pongtawat Chippimolchai, V. Wuwongse, Chutiporn Anutariya

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引用次数: 8

摘要

语义查询试图帮助用户在不知道数据库的详细语法结构的情况下获取或操作数据库中的数据。语义查询的表述和评估需要示意图和其他约束信息以及一般的领域知识。提出了一种新的XML数据库语义查询的表述和评估方法。它使用XML声明性描述(XML Declarative Description, XDD)——基于XML的知识表示——对数据库及其XML元素的模式进行建模，并表示领域知识，从而实现所有所需信息的统一表示。等效转换(ET)是一种新的计算范式，它将一种表示转换为另一种表示，同时保留其含义，用于优化和评估查询。

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Semantic query formulation and evaluation for XML databases

A semantic query attempts to help a user obtain or manipulate data in a database without knowing its detailed syntactic structure. Formulation and evaluation of semantic queries require schematic and other constraint information as well as general domain knowledge. A new approach to the formulation and evaluation of semantic queries for XML databases is proposed. It employs XML Declarative Description (XDD) - XML based knowledge representation - to model the databases together with the schemata of their XML elements and to represent domain knowledge resulting in a uniform representation of all the required information. Equivalent transformation (ET) - a new computation paradigm which transforms a representation into another while preserving their meanings - is used to optimize and evaluate the queries.

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Proceedings of the Third International Conference on Web Information Systems Engineering, 2002. WISE 2002.

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