VersionPress is a combination of hooks, own text format and custom PHP code that manages Git and makes it all work together. VersionPress extracts information from the database, stores is in a format that is suitable for diffing and merging and versions that in a Git repository. So we do not version control db files themselves but rather the information inside the database. Sorry if you find the term "database versioning" technically incorrect, we just had to call it something simple that would still be relatively close to the technical truth.

I'll prepare a blog post on how VersionPress attacks the versioning problem technically.