Data Synchronization System On Internet Or Intranet

Data synchronization system on Internet or Intranet realizes real time synchronization of data in the files which are in the computers of different location. It includes the characters of flexibility , stability security and high efficiency,and so on.The system finally can be used in he Intranet of enterprises , schools and government departments,and so forth,to realize sharing data with high efficiency , accuracy and security.So working effcincy can be greatly improved,meanwhile,it is also good for some aspects such as data backup and mirroring web site .Additionally the system adopts open encryption interface and network transmission interface,so that the user may define his own encryption algorithm and use the function of file data transmission in other systems.The main content of the paper is divided into five sections: Section 1 explores file access monitoring technology in detail.It introduces the approach of file access monitoring by file system driven API Hook and Windows file I/O functions,and makes comparison for the function and performance with one another.The technology of this section is the nucleus of file management module in data synchronization system server. Section 2 studies the database access management technology based on Microsoft SQL Server 2000 which is the nuclear technology of database management module in data synchronization system sever,and emphisizes on OLE DB database access technology .Section 3 introduces two kinds of block cipher algorithm used in data synchronization system.:GOST algorithm and Rijndael algorithm,meanwhile offers interfaces in which encryption algorithm can be userdefined.This is the necleus of encryption module in data synchronization system server and client.Section 4 studies network transmission management technology.This section mainly exploresprogramming model and the network interface technology using Completion Ports to develop server which is the key technology of network transmission management module in data synchronized system server and client.Section 5 introdues the brief using approach in data synchronized system server and client as well as some improvement suggestion.