can any one help me with the logic of how to go about integrating sharepoint with other DMS? for eg, if i upload some document in DMS, same should be Syncd with sharepoint and vice versa. is it possible to achieve this?
It depend which DMS you are trying to integrate. Normally now a days every application have a connector to sync or work with sharepoint.
So you can check with Vendor, if they connector for sharepoint. We are crawling the documentum files in sharepoint using their connector. But you can do more than that.
Also check this post will help you understand.