摘要
设计了一套基于协同工作的数据管理系统模型,用于解决Internet环境下多数据库的管理问题.在该模型的基础上,为了保证所有用户都能获得正确的数据,提出了协同数据管理系统数据一致性的概念,并在此理论基础上设计了原型系统,利用虚拟表屏蔽异构数据库的结构差异,确保数据一致性模型的实现.
Efficiently and effectively managing the distributed, heterogeneous and autonomous databases under web environment is a key issue for many applications such as grid systems. However, until now no prototype has been applied for databases under web environment without any restriction on local database characteristics, such as data consistency, subsequent control, security control and transaction, etc. In this paper, a data management model named CoDMS is developed to solve this problem. CoDMS is based on computer-supported cooperative work concepts and a data consistency model. Virtual tables are defined to control data consistency, that is, to make it possible to query and/or transfer data without considering local database characteristics. We have also developed a prototype based on CoDMS for webbased database management systems. We shall discuss subsequent security and transaction in the future.
出处
《西安电子科技大学学报》
EI
CAS
CSCD
北大核心
2006年第6期1000-1004,共5页
Journal of Xidian University
基金
北京市科委199950号高科技研究和863计划资助项目(2001AA113150)
国家自然科学基金资助(60073011)
关键词
分布异构数据管理
协同工作
一致性模型
虚拟表
web-based data management；eomputer-supported cooperative work；eonsistency modd；virtual table
