WordNet (r) 3.0 (2006):

Db
    n 1: a transuranic element [syn: dubnium, Db, hahnium,
         element 105, atomic number 105]
    2: a logarithmic unit of sound intensity; 10 times the logarithm
       of the ratio of the sound intensity to some reference
       intensity [syn: decibel, dB]

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

DB
       DataBase


The Free On-line Dictionary of Computing (30 December 2018):

database
DB

   1.  One or more large structured sets of persistent
   data, usually associated with software to update and query
   the data.  A simple database might be a single file containing
   many records, each of which contains the same set of
   fields where each field is a certain fixed width.

   A database is one component of a database management system.

   See also ANSI/SPARC Architecture, atomic, blob, data
   definition language, deductive database, distributed
   database, fourth generation language, functional
   database, object-oriented database, relational database.

   Carol E. Brown's tutorial

(http://accounting.rutgers.edu/raw/aies/www.bus.orst.edu/faculty/brownc/lectures/db_tutor/db_tutor.htm).

   2.  A collection of nodes managed and stored in
   one place and all accessible via the same server.  Links
   outside this are "external", and those inside are "internal".

   On the World-Wide Web this is called a website.

   3. All the facts and rules comprising a logic programming
   program.

   (2005-11-17)