Without opening the file, it is impossible to know for sure, but files with this naming convention typically include:
A specific revision of code or software built on that date. Archived Reports: Periodic data exports. v_2016-01-02-03r.7z
A snapshot of a database from that specific date. Without opening the file, it is impossible to
To give you a better description, could you tell me where you found this file or what kind of project it relates to? Without opening the file