随着当前网络技术的迅猛发展,计算机信息系统所覆盖的空间范围已变得越来越大,如何归集,整理并加以综合分析利用这些分布在不同地域的信息资源日益重要,在税务领域,税收数据的整理和汇集尤其不容疏忽。城市级税收监控系统以各基层单位的大量数据为基础,采用宏观和微观相结合的方式分析数据,产生各种税收指标,输出图形、表格或文本,用来衡量和监督基层单位税收征管质量,为税收决策提供依据。可见,税收监控的基础是各基层单位的大量原始数据。我国涉税软件的开发及应用已日渐普及,其中负责日常业务处理的税收征管业务软件占据了主导地位。随着征管业务软件应用的不断深入,许多地方国税部门的税务系统已积累了丰富的涉税资料,怎样利用好这些数据加强税收监控,使其服务于税收管理,正成为目前各地税务部门努力的方向。大型数据库系统的数据复制技术为数据的管理汇聚 With the rapid development of the current network technology, the space covered by the computer information system has become larger and larger. How to collect, collate and comprehensively analyze the use of these distributed information resources in different regions is increasingly important. In the tax field, In particular, tax data collection and collection should not be ignored. Based on a large amount of data of grassroots units, the city-level taxation monitoring system analyzes the data in a combination of macroscopical and microcosmic methods to generate various tax indicators, output graphs, tables or texts to measure and supervise the tax collection and administration of grassroots units, Provide the basis for tax decision. Obviously, the basis of tax control is the large amount of raw data of various grass-roots units. The development and application of tax-related software in China has become more and more popular. Among them, the tax collection and management software in charge of daily business operations occupies a leading position. With the deepening of application of collection and management software, the taxation system in many local taxation departments has accumulated a wealth of tax-related information. How to make good use of these data to strengthen tax monitoring so that it serves tax administration is becoming an effort by tax departments around the world direction. Large database system data replication technology for the management of data aggregation