Currently,there are a great of research topics that focus on storing and querying XML data in an RDBMS,and publishing relational data as XML documents,and querying XML views of relational data. An overview of XMLdata ...Currently,there are a great of research topics that focus on storing and querying XML data in an RDBMS,and publishing relational data as XML documents,and querying XML views of relational data. An overview of XMLdata management based on RDBMS is given in this paper. Some existing technologies of storing and querying XMLdata in relational databases ,publishing relational data as XML documents,and querying XML views of relational dataare sufficiently surveyed ,their advantages ,disadvantages ,and causes are analyzed.展开更多
重点讨论XML与关系数据库数据的转换问题,利用XML元语言的特点,定义了基于XML的映射规则R2X来描述从关系数据到XML文档的映射,通过定义映射文件将分布式数据库数据映射为符合用户要求的XML文档。提出一种映射规则R2X(relational to XML...重点讨论XML与关系数据库数据的转换问题,利用XML元语言的特点,定义了基于XML的映射规则R2X来描述从关系数据到XML文档的映射,通过定义映射文件将分布式数据库数据映射为符合用户要求的XML文档。提出一种映射规则R2X(relational to XML)来描述分布式数据库数据到XML文档的集成与转换。在实现关系数据与XML文档映射的基础上,针对分布式数据库,提出一个基于R2X的分布式数据库集成模型,建立了基于R2X的分布式数据库集成方案、分布式数据库集成系统的体系结构,并对系统中的主要模块给出了具体的实现方法。展开更多
文摘Currently,there are a great of research topics that focus on storing and querying XML data in an RDBMS,and publishing relational data as XML documents,and querying XML views of relational data. An overview of XMLdata management based on RDBMS is given in this paper. Some existing technologies of storing and querying XMLdata in relational databases ,publishing relational data as XML documents,and querying XML views of relational dataare sufficiently surveyed ,their advantages ,disadvantages ,and causes are analyzed.
文摘重点讨论XML与关系数据库数据的转换问题,利用XML元语言的特点,定义了基于XML的映射规则R2X来描述从关系数据到XML文档的映射,通过定义映射文件将分布式数据库数据映射为符合用户要求的XML文档。提出一种映射规则R2X(relational to XML)来描述分布式数据库数据到XML文档的集成与转换。在实现关系数据与XML文档映射的基础上,针对分布式数据库,提出一个基于R2X的分布式数据库集成模型,建立了基于R2X的分布式数据库集成方案、分布式数据库集成系统的体系结构,并对系统中的主要模块给出了具体的实现方法。
