【摘要】 电力企业中存在着许多彼此独立的异构信息系统,这些"信息孤岛"之间往往存在很强的独立性和自治性,而它们协同工作时,必然会涉及到其所依托的数据库的大量数据复制和交换。如何保证数据抽取的一致性和交换数据的实时性是一个急需解决的问题。介绍了应用于异构电力系统的分布动态数据复制方法,针对不同的情况给出了解决方案并分析了其特点。目前该方法已经在江西省吉安供电局异构电力信息系统中得到了较好的应用。更多还原

【Abstract】 Many isolated information islands existed in electrical information system. Most of them are independent and autonomous. While they are working together, how to deal with the transmission and replication of data is an urgent problem. In this paper, an elementary scheme was developed to solve this problem and to analyze the characteristics of each scheme. This method has been implemented in the heterogeneous information system of Power Supply Bureau in Ji′an, Jiangxi Province.更多还原