Content Conflicts vs Property Conflicts

A Content conflict appears in the content of a file. A merge occurs for every inbound change to a file which is also modified in the working copy. In some cases, if the local change and the incoming change intersect each other, Apache Subversion™ cannot merge these changes without intervention. So if the conflict is real when updating the file in question the conflicting area is marked like this:

              <<<<<<< filename
              your changes
              code merged from repository
              >>>>>>> revision

Also, for every conflicted file Subversion places three additional temporary files in your directory:

OLDREV and NEWREV are revision numbers. If you have conflicts with binary files, Subversion does not attempt to merge the files by itself. The local file remains unchanged (exactly as you last changed it) and you will get filename.ext.r* files also.

A Property conflict is obtained when two people modify the same property of the same file or folder. When updating such a resource a file named filename.ext.prej is created in your working copy containing the nature of the conflict. Your local file property that is in conflict will not be changed. After resolving the conflict you should use the Mark resolved action in order to be able to commit the file. Note that the Mark resolved action does not really resolve the conflict. It just removes the conflicted flag of the file and deletes the temporary files.