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For the Wikipedia template, see Template: Db.

DB, dB, or db may refer to:

In science and technology[edit]

  • Decibel (dB), a logarithmic unit of measurement in acoustics and electronics
  • Dubnium (Db), a chemical element
  • DB connector, a size of D-subminiature electrical connector
  • Database (DB), an organized collection of data
    • Berkeley DB, a cross-platform embedded database library
    • .db, a database file extension
  • dyne:bolic GNU/Linux, a distribution of the Linux operating system

In arts and entertainment[edit]


In business[edit]

Other uses[edit]

  • ȸ, the db-digraph a ligature of "d" and "b" in African linguistics
  • D. B. Cooper, a hijacker
  • Defensive back, a position in American football and Canadian football