【摘要】 在广域网中,片段分配是分布式数据库设计中的一个主要问题,因为它关系到整个分布式数据库系统的性能。基于一个较简单、全面的分配模型提出了一个片段分配的启发式算法,旨在尽量减少通讯代价的基础上找到一个接近最优解。更多还原

【Abstract】 On a wide area network,fragment allocation is a major issue in distributed database design since it concerns the overall performance of the distributed database system.Based on a simple and comprehensive allocation model, a heuristic algorithm of fragment allocation is proposed here. Its aim is to decrease communcication cost and find a near-optimal solution.’更多还原