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XML Data Mediator Integrated solution for XML Roundtrip from XML to Relational

机译:从XML到关系型XML往返的XML数据介体集成解决方案

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This paper presents a system for efficient data transformations between XML and relational databases, called XML Data Mediator (XDM). XDM enables the transformation by externalizing the specification of the mapping in a script and using an efficient run-time engine that automates the conversion task. The runtime engine is independent from the mapping script. A parser converts a mapping script into an internal conversion object. For the mapping from relational to XML, we use a tagging tree as a conversion object inside the runtime engine, and use an SQL outer-join scheme to combine multiple SQL queries in order to reduce the number of backend relational database accesses. For the mapping from XML to relational, the conversion object is a shredding tree, and we use an innovative algorithm to process the XML as a stream in order to achieve linear complexity with respect to the size of the XML document.
机译:本文提出了一种用于XML和关系数据库之间的有效数据转换的系统,称为XML数据介体(XDM)。 XDM通过外部化脚本中的映射说明并使用自动执行转换任务的高效运行时引擎来启用转换。运行时引擎独立于映射脚本。解析器将映射脚本转换为内部转换对象。对于从关系到XML的映射,我们使用标签树作为运行时引擎内部的转换对象,并使用SQL外连接方案组合多个SQL查询,以减少后端关系数据库访问的次数。对于从XML到关系的映射,转换对象是一棵切碎的树,并且我们使用一种创新算法将XML作为流进行处理,以实现相对于XML文档大小的线性复杂性。

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