基于链式描述符的网络数据库容灾备份方法  

Network Database Disaster Tolerance Backup Method Based on Chain Descriptor

作　　者：时培胜[1] 李强[1] 林春[1] 王成全[1] SHI Peisheng;LI Qiang;LIN Chun;WANG Chengquan(East University of Heilongjiang,Harbin Heilongjiang 150066,China)

机构地区：[1]黑龙江东方学院,黑龙江哈尔滨150066

出　　处：《信息与电脑》2021年第14期167-169,共3页Information & Computer

基　　金：2020年度黑龙江东方学院科研项目“层次化通信网络数据库容灾备份方法仿真研究”(项目编号:HDFKY200117)。

摘　　要：由于传统方法设置容灾的范围与衡量指标不明确,导致数据库处理备份成本较高,因此研究基于链式描述符的网络数据库容灾备份方法。首先,通过获取数据库日志变化,确保源表和目标表的结构一致;其次,进一步计算网络数的据相对熵值,设置容灾的范围与衡量指标,减少通信服务资源开销;最后,采用链式描述符保证备份数据的一致性,完成基于链式描述符的网络数据库容灾备份方法。通过实验分析,设计方法优于传统方法。Because the scope and measurement index of disaster recovery set by traditional methods are not clear,resulting in high cost of database processing and backup,the disaster recovery and backup method of network database based on chain descriptor is studied.Firstly,the structure of the source table and the target table is consistent by obtaining the database log changes,;Secondly,the relative entropy of network data is further calculated,and the scope and measurement indicators of disaster recovery are set to reduce the cost of communication service resources,;Finally,the chain descriptor is used to ensure the consistency of backup data,and the disaster recovery backup method of network database based on chain descriptor is completed.Through experimental analysis,it is proved that the design method is better than the traditional method.

关 键 词：链式描述符 网络数据库 容灾备份 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]