DB, dB, or db may refer to:
In May 2006, Deutsche Bank launched a new set of commodity index products called the Deutsche Bank Liquid Commodities Indices Optimum Yield, or DBLCI-OY.
The DBAG Class 225 are a set of related 4 axle diesel hydraulic locomotives from the DB V 160 family. The series does not represent a new build, but a reclassification and/or rebuilding of 1960s and 1970s locomotives of Class 215 and 218 units.
dBase (also stylized dBASE) was one of the first database management systems for microcomputers, and the most successful in its day.
DBS Bank Ltd is a Singaporean multinational banking and financial services corporation headquartered in Marina Bay, Singapore.
DB Class V 200.0 (from 1968: Class 220) was the first series production diesel-hydraulic express locomotive of the German Deutsche Bundesbahn and - as Am 4/4 - of the SBB-CFF-FFS in Switzerland.
DB Cargo UK, formerly DB Schenker Rail UK and English, Welsh & Scottish Railway, is a British rail freight company headquartered in Doncaster, England.
DBU Copenhagen (Danish: DBU København) is the local governing body for association football and futsal in Copenhagen, Denmark.
The DB Class 218 (before 1968 the DB Class V 164) are a class of 4 axle, diesel hydraulic locomotives acquired by the Deutsche Bundesbahn for use on main and secondary lines for both passenger and freight trains.
Density-based spatial clustering of applications with noise (DBSCAN) is a data clustering algorithm proposed by Martin Ester, Hans-Peter Kriegel, Jörg Sander and Xiaowei Xu in 1996. It is a density-based clustering algorithm: given a set of points in some space, it groups together points that are closely packed together (points with many nearby neighbors), marking as outliers points that lie alone in low-density regions (whose nearest neighbors are too far away).