I am working on a web-application. In which the user session expires if the user is not working on the application for 15 minutes i.e he is logged out of the application. Now my problem is that a user can check-out any document from the web-application, edit it and check-in back this document. This editing of the document can take any number of hours and can be checked back in from any PC as this is a web-based application. I need to maintain all the information of this document i.e. both edited and unedited information. How do I do it?
I hope I am clear. Can anyone help me with this?
Thanks in advance
