摘要
研究和扩充了事务的垂直分片算法,提出了在基于事务的垂直分片算法中如何计算节点的估算代价的方法.通过对事务中SQL语句的分析,得到事务查询所要求的属性,形成事务_属性矩阵.程序表明,本算法可以将分布式数据库系统中的关系合理地分片.
The vertical partitioning is a process of decomposing a relation into several fragments. The objective of vertical partitioning is to minimize the number disk accesses and execute transactions concurrently, to improve the performance of query execution and system throughput. The transaction based on vertical partitioning algorithm is studied and expanded in this paper. It has been proved that it can divide a relation into fragments relationally.
出处
《西安工程科技学院学报》
2007年第1期79-82,共4页
Journal of Xi an University of Engineering Science and Technology
关键词
分布式数据库系统
垂直分片
属性
事务
T_分片
distributed database system
vertical partitioning
attribute
transaction
T_fragment
