Font Size: a A A

Research And Implementation On Heterogeneous Database Replication

Posted on:2007-12-28Degree:MasterType:Thesis
Country:ChinaCandidate:N JinFull Text:PDF
GTID:2178360212958875Subject:Software engineering
Abstract/Summary:PDF Full Text Request
Database replication is one of the key technology in distributed environment. Because the heterogeneities of database become more and more popular, the research on heterogeneous database replication system is very important both theoretically and practically.Development at full speed and extensive application of the network technology, especially the popularization of Internet, the ones that have facilitated enterprises developed across the region greatly. At the same time, in order to meet the commercial competitive environment increasing constantly, a lot of enterprises, through recombinating constantly and managing scatteredly to raise the efficiency, have formed dispersing, different environmental characteristic that construct. Organization these disperse at region at the same time, relatively centralized on management, have every department of parts control and disperse, manage, have whole the overall situation organized control managing together with the high-level one too often. This kind can exchange and share flexibly in coordination with information between every department of management expectancy, can manage and use in unison.At present, distributed database technology has been already ripe, and widely used because of decline of the cost of computer and reducing of communication expenses. However, the distributed database system should offer some autonomy as well as realize overall control, have brought very great limitation. For this reason, introduce the database and duplicate the mechanism, the database duplicates and depends on distributed database technology but the function that can offer the distributed database not to possess, especially because there is a data duplicate available while depositing and withdrawing the data, can improve the usability that systematic performance and protection employ. Can realize the controlling mechanism that concentrate on combining with autonomy by using the replication technology of the database, and can improve the dependability of the whole distributed database system and response speed greatly.Database replication, mean, put different database node in and maintain method of consistency their the same datum a lot of replication of target, this improves systematic usability and an important technology of the dependability in distributed environment. Database replication, can read and replace and take the place of the long-range access to data with local datum while being redundant through data, can reduce network transmit expenses and shorten response time, can also the security...
Keywords/Search Tags:Database, Replication, Heterogeneous
PDF Full Text Request
Related items