Incremental backup of a file

Oct 11 2007 2:46 AM
Hi,
    I'm trying to develop a project by which any one can get incremental backup of any file. File Upload to Server and Download from Server already done. But problem is how I can get changed data from a file and how it can add to existing file. If any one have idea in algo and code level please help me.
Thanks,
Suman Biswas
Calcutta, India

Answers (4)