The file has an extension LOC (e.g. VeSys_database.loc), if you delete this file then the database becomes editable.
As Nuri pointed out you will need to delete the .loc file, this will be located next to the database file that is locked. Depending on whether you have a 32bit or 64bit installation the default location should be:
C:\Program Files\VeSys Electrical Series\Vesys Components\data
C:\Program Files (x86)\VeSys Electrical Series\Vesys Components\data