IBM Db2, a family of relational databases for various platforms
A series of PC-based software packages existed (II, III, IV), starting in the 1980s: The first was named dBase II, a database program for the CP/M and MS-DOS operating systems
Aston Martin DB2, a model from the English sport car brand Aston Martin.
DB2 (bike), a motorcycle build from Bimota.
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