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DB (car)DB was a French automobile maker between 1938 and 1961. The firm was founded by Charles Deutsch and Rene Bonnet. It produced light sports cars with fiberglass bodies mainly powered by Panhard flat-twin engines. DB was very active in competition especially DB(A)dB(A or dBA stands for decibels adjusted . It is the weighted absolute noise power, calculated in dB referenced to 3. 16 picowatts (-85 dBm), which is 0 dBA. Usually the dBA is used for determining the sound exposure of humans. The A indicates a certain f DBmdBm is an abbreviation for the dB referenced to one milliwatt. Note 1 dBm is used in communication work as a measure of absolute power values. Zero dBm equals one milliwatt. A 3 dBm increase represents roughly doubling the power, which means that 3 dBm eq DBrndBrn or dB(rn is an abbreviation for decibels above reference noise . Note 1 Weighted noise power in dB is referred to 1. Thus, 0dBrn -90 dBm. Use of 144 line, 144-receiver, or C-message weighting, or flat weighting, must be indicated in parentheses as re DBSDBS may stand for: Direct broadcast satellite Deep brain stimulation Development Bank of Singapore Diocesan Boys' School, Hong Kong Den Beste Sykkel a norwegian bike manufacturer TLAs. DB2IBM's DB2 product is a database management system. It has a long history and was what some consider to be the first database product to use SQL. According to Michael Stonebraker, when IBM chose to make SQL the standard for database query languages by anno DB DB Regionalbahn Westfalen DBASE DBA DBI/DBD DBLP DBpowerAMP DBX (noise reduction) Dbx, Inc.