what database?

I need to make some "modifications" to an existing application. Without getting into all the gritty details, I've noticed that while the rest of the application uses a Firebird database (it was written in Delphi), the particular section I'm targeting saves its data in separate database files with .DB and .MB extensions. I haven't been able to open these files-- does anyone know which type of database engine would use .DB and .MB?

First 32 bytes of .DB file is:
28 00 00 08 02 02 01 00 00 00 01 00 01 00 01 00
01 00 11 00 00 00 00 00 00 00 CC FB E7 6B 00 00

First 32 bytes of .MB file is:
00 01 00 01 00 82 73 02 00 29 00 00 10 00 10 00
10 40 00 00 08 00 00 00 00 00 00 00 00 00 00 00

NO EXCEPTIONS

<

<