一种用于存储与查询半结构化数据的新方法

New Approach for Storing and Querying Semistructured Data

由于半结构化数据缺乏模式信息,因而半结构化数据的存储与查询将是一个十分重要且具有挑战性的研究课题。利用关系数据库存储半结构化数据可以重用数据库的查询优化器和事务处理机制,能够保证半结构化数据的一致性和完整性。该文提出一种实现半结构化数据存储与查询的新方法,该方法使用关系数据库系统来实现半结构化数据的存储与查询。给出了把基于半结构化数据的查询重写为基于关系的查询的算法,同时介绍一个可视化查询程序。

Storing and querying semistructured data will be a very important and challenging research because it lacks schema information. Using RDBMS to store semistructured data can reuse database＇s query optimizer and transaction manager, which can ensure semistructured dam＇s consistency and integrality. This paper presents a new approach for storing and querying semistructured data. An algorithm is given to rewrite from semistructured data-based query to relation-based one. and a visual query program is introduced.