Updates a database from the given DAT file. The database must exist in the path defined in menu File/Settings/RomCenter databases path. The name of the database is derived from the DAT file being processed. For example, if the tree node processed is Amstrad CPC\Applications\[BIN] (TOSEC-v2020-05-12_CM).dat, RCDBM will search in the databases path to find a database starting with Amstrad CPC - Applications - [BIN]. RCDBM will assume that <font inherit/inherit;;#e74c3c;;inherit>the first database it finds</font> (if it finds one) is the database to be updated and pass that to rc.exe.

The term <font inherit/inherit;;#e74c3c;;inherit>first database</font> is used because the database name will probably be named from an older TOSEC version, so it may have a different date in its filename (i.e. Amstrad CPC - Applications - [BIN] (TOSEC-v2019-07-20_CM).dat). If the proces finishes without errors, the original database name will be changed to reflect the new TOSEC DAT release date. For instance Amstrad CPC - Games - [DSK] (TOSEC-v2015-05-07_CM).rdt would be renamed to Amstrad CPC - Games - [DSK] (TOSEC-v2020-07-12_CM).rdt. This process assumes that the original filename follows the TOSEC naming convention (like RomCenter does).