Wow .... this would be a good thing since PTC charges two arms and two legs for their software.
Of course I have to agree with 'srieger', as the Pro/E assembly has a written list of part and/or assembly file names and their index numbers in them, as does the drawing files.
I know this from the pre-R18 days, when PTC had a text based file format, as everyone use to edit the assembly or drawing file, where they would quickly rename part file names and revision strings and then submit them to Pro/PDM.
Of course you need to get in-touch with Tortoise SVN, as they may have signed a 'Developers' agreement with PTC so they could edit the PTC assembly & drawings files.
Within the last few years, I had searched the Internet for a db software that was cheaper than PTC's and I do remember there are some out there, which would manage the PTC files.
I used 'IDE' at United Defense in the early 2000's and it was designed to track files that were submitted as a group, where it would allow many users to then retrieve and resubmitted the Pro/E file(s), of course it was used for all file formats. IDE also allowed users to edit the group names and/or include/exclude other files from the group. Of course it was a management nightmare, when it came to drawings/assemblies with hundreds and thousands of part/assembly files that were grouped.
Edited by: tosh382