aququalogic数据服务平台中SQL到XQuery的转换

Sunil Jigyasu, Sujeet Banerjee, V. Borkar, M. Carey, Kanad Dixit, Anil Malkani, S. Thatte
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引用次数: 17

摘要

长期以来,SQL一直是关系数据库系统中检索和操作数据的标准语言。XML已经成为数据交换的标准格式,而XQuery正在成为查询XML数据的标准语言。BEA AquaLogic数据服务平台提供了异构企业数据源的面向服务的、基于xml的视图,并允许使用XQuery查询该视图。AquaLogic DSP包括一个JDBC驱动程序,它通过SQL-to- xquery转换器将旧的(SQL)世界与新的(XML)世界连接起来。本文概述了与创建这样一个驱动程序相关的问题,并详细介绍了将SQL查询转换为XQuery表达式的方法。本文还涉及与在JDBC结果集是所需输出格式的上下文中处理XML查询结果相关的性能考虑。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
SQL to XQuery Translation in the AquaLogic Data Services Platform
SQL has long been the standard language for retrieving and manipulating data in relational database systems. XML has become the standard format for data exchange, and XQuery is on its way to becoming the standard language for querying XML data. The BEA AquaLogic Data Services Platform provides a service-oriented, XML-based view of heterogeneous enterprise data sources and allows this view to be queried using XQuery. AquaLogic DSP includes a JDBC driver that connects the old (SQL) world with the new (XML) world via a SQL-to-XQuery translator. This paper outlines the issues related to creating such a driver and details the approach used to translate SQL queries into XQuery expressions. The paper also touches on performance considerations related to handling XML query results in a context where JDBC result sets are the desired output format.
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