Patent ID: 6976030

Claim:
A system for synchronizing distributed stored documents, the system comprising a core-node, a plurality of branch-nodes and a network connecting the core-node with the branch-nodes; wherein each of the branch-nodes comprises a branch-database server and a branch-FTP server, wherein: the branch-database server stores a summary of all distributed stored documents, and the summary can be updated in accordance with a sync message received from the core-node; and the branch-FTP server is used for storing the distributed stored documents, and has the function of exchanging documents with the core-node; and the core-node comprises a core-database server, a core-FTP server and an application server, wherein: the core-database server stores a summary of all distributed stored documents, and has the function of sending sync messages to each of the branch-database servers; the core-FTP server is used for storing the distributed stored documents, and has the function of exchanging documents with the branch-node; and the application server comprises a sync controlling module for controlling data exchange between the core-FTP server and the branch-FTP servers, and the sync controlling module has the function of updating the summary of the distributed stored documents stored in the core-database server.