摘要
数据收集是移动数据库中的一个关键问题,将数据收集到移动客户机的缓存中,使客户机在断接期间使用本地数据自主操作,提高了数据的可用性。文章提出了根据移动事务相关图的事务序列进行收集和淘汰的收集方法,以属性—事务片段存取集和元组—事务片段存取集组成收集单元,以此为收集粒度,方便收集,并节省空间。解决了数据收集中收集内容与收集单元的问题。
Data Hoarding is a key issue in mobile database.It will support the autonomy operation of mobile hosts when they are disconnected from servers by prefetching important data into local cache.In this paper a hoarding method is proposed,in which data is hoarded according to the transaction sequence in the transaction relation graph.An at-tribute-transaction access segment and a tuple—transaction access segment are used in this method as hoarding unit,and this will help the hoardings and save storage room.Problems about hoarding content and hoarding unit are solved in this paper.
出处
《计算机工程与应用》
CSCD
北大核心
2004年第8期25-27,30,共4页
Computer Engineering and Applications
基金
国家自然科学基金资助(编号:60073045)
国家部委预研基金资助
关键词
移动事务
数据收集
收集片段
Mobile transaction,Data hording,Hoarding segment
