Query formulation and evaluation for XML databases

被引：0
|
作者：
Akama, K [1 ]
Anutariya, C [1 ]
Wuwongse, V [1 ]
Nantajeewarawat, E [1 ]
机构：
[1] Hokkaido Univ, Ctr Informat & Multimedia Studies, Sapporo, Hokkaido 060, Japan
来源：
INTERNET TECHNOLOGIES, APPLICATIONS AND SOCIETAL IMPACT | 2002年 / 104卷
关键词：
XML databases; query formulation and evaluation; XML declarative descriptions; equivalent transformation;
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：
The proposed approach to XML query formulation and evaluation developed by means of XML Declarative Description (XDD) theory formalizes a query as an XDD description comprising one or more XML clauses the syntax of which can be subdivided into the three specifications: pattern of XML elements to be selected, the query's selection criteria and the structure of the resulting elements. It supports formulation of essential functionality requirements for an XML query language such as selection and extraction, combination, transformation, closure and nested queries. Evaluation of a query on a specified XML database is carried out by employment of Equivalent Transformation paradigm. Moreover, since XDD theory provides a simple mechanism for representation of knowledge and relationships among elements in database, queries about derivable information, contained implicitly in the database are expressible and computable.
引用
收藏
页码：273 / 288
页数：16
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