Typical of IBM the database on the i-series, AS/400 … has had a lot of names but
IBM has only offered one database running on this platform.
It’s been DB2 – DB2/400 – UDB/400 (universal database). Every AS/400 comes with this database.
The only differences are based on the OS version. When you write an F-spec in RPG/RPGLE that’s the
database you’re using.
Right DanD the IFS part of the 400 thingy runs PC op systems – UNIX or Windows or the like and there you
can run any (most, some) PC – Server database. MySQL comes up alot. But part of the question was RPG and unless you’re jumping through hoops RPG is using DB2/400.