When you add a new document to the object store, the application creates a document object. Content Engine stores this object in the object store database. The content elements of the document object, if any, are stored in a file system or as a binary large object (BLOb) in the database, as specified by the class of the document object. The first document object in a version series is created when a document is added. Another version of the document object is created when the document is checked out.
After a document is added to an object store, it can be viewed, copied, checked out, modified, and checked back in. See About versioning for more information about modifying documents.