Semantic query formulation and evaluation for XML databases

被引:0
作者
Chippimolchai, P
Wuwongse, V
Anutariya, C
机构
来源
WISE 2002: PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON WEB INFORMATION SYSTEMS ENGINEERING | 2002年
关键词
D O I
暂无
中图分类号
TP [自动化技术、计算机技术];
学科分类号
0812 ;
摘要
A semantic query attempts to help a user to 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)-an 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 transform a representation into another one while preserving their meanings-is used to optimize and evaluate the queries.
引用
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页码:205 / 214
页数:10
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