摘要
在移动对象数据库中,移动对象的数量可能会经常变化,这就给索引技术提出了新的挑战。移动对象索引技术的效率是移动对象数据库的一个重要研究课题。为了防止数据库由于移动对象数量的变化而导致性能锐减,本文在网格文件索引的基础上提出了一种动态网格索引技术。通过实验比较显示,它相对于静态索引具有更好的适应性。
The number of moving objects may change frequently in mobile object databases, which poses a new challenge to the indexing techniques. An efficient index to moving objects is one of the important issues in mobile object databases. In order to prevent the performance＇s sharp degrading due to the change of the moving object number, the paper presents a dynamic grid index to settle this issue. The primary experiments provided show the better adaptable ability to the number of moving objects compared with the static one.
出处
《计算机工程与科学》
CSCD
北大核心
2009年第2期69-72,共4页
Computer Engineering & Science
