对分布式数据库查询算法的改进与应用研究  

Research on the improvement and application of query algorithm in distributed database

作　　者：杨燕艳[1] 

机构地区：[1]苏州托普信息职业技术学院,江苏苏州215311

出　　处：《无线互联科技》2017年第21期100-103,共4页Wireless Internet Technology

摘　　要：针对分布式数据库数据查询难的情况,文章对分布式数据库查询算法原理及优化问题展开了分析,然后提出了基于贪婪算法的改进查询算法,并对算法进行了应用测试。从应用效果来看,采用改进算法能够降低数据库查询代价,并保证查询合格率,因此能够满足系统的运行需求。In view of the difficult situation of data query in distributed database, this paper analyzes the principle and optimization of distributed database query algorithm, and then proposes an improved query algorithm based on greedy algorithm, and applied the test to the algorithm. From the application effect, the improved algorithm can query the cost of low database and ensure the query pass rate, so it can meet the system operation requirements.

关 键 词：分布式数据库 查询算法 贪婪算法 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]