Incremental data abstracting method, device and server

It includes: that the corresponding mark of most newly generated incremental data is obtained from source database system that the application, which provides a kind of incremental data abstracting method, device and server, method,；According to the mark of the mark and the local the last item incremental data extracted that obtain, the mark range of incremental data to be extracted is determined；It is extracted from source database system and stores the corresponding incremental data of mark range.Since the application does not need to install any broker program in source database system, the extraction of incremental data can be realized, extract the influence operated normally to source database so as to reduce incremental data.