摘要： 分布式数据库系统数据的物理分布和冗余导致其处理难度和复杂度增加，分布式数据库的查询优化是数据库查询理论的核心。该文应用XML技术，分析用户提交的非递归查询任务，得到一个最小查询视图。对各分布式数据库进行查询，处理查询所得结果并返回给用户，实现对分布式数据库的有效查询。
关键词:
分布式数据库,
非递归查询,
最小视图
Abstract: In the distributed database system, distributed inquiry process becomes more difficult and complex because of the physical distribution and redundancy of data, which makes the optimized inquiry method based on distributed database system become one of the cores of the database query theories. This paper uses XML to analyze the user’s non-recursive query assignments to obtain the smallest query view, queries to each distributed database, and returns the results of the query to the user to realize the effective query to the distributed database.
Key words:
distributed database,
non-recursive queries,
smallest view
中图分类号:
曹渠江;赵 健;施振佺. 基于XML的分布式数据库非递归查询[J]. 计算机工程, 2008, 34(16): 87-88.
CAO Qu-jiang; ZHAO Jian; SHI Zhen-quan. Distributed Database Non-recursive Queries Based on XML[J]. Computer Engineering, 2008, 34(16): 87-88.