What is the exact feature of Check in and Check Out in Document Management System(DMS). I am little bit confuse with the 'in' and 'out'. Which functionality is actually for what.
In a system that manages documents, such as Nuxeo or LogicalDOC DMS the Check-in could also trigger versioning.
So it would produce a new version of the document using the latest file uploaded. Versioning allows to track changes in a document and get an earlier release.