links to sleepycat in references are broken. just put a note next to the link -- perhaps somebody can find an alternative source?
"offer speed since queries aren't involved" ... Queries has nothing to do with database engines in general among different db engines.
Database engines don't use queries. There's a layer above the engines that handles the queries and invokes the db engine. dbm is mor of a db engine?
From this article: "While dbm and its derivatives are pre-relational databases — effectively a hash fixed to disk — in practice they can offer a more practical solution for high-speed storage looked up by-key as they do not require the overhead of connecting and preparing queries. This is balanced by the fact that they can generally only be opened for writing by a single process at a time. While this can be addressed by the use of an agent daemon which can receive signals from multiple processes, this does, in practice, add back some of the overhead."
(?) Should be removed or written here about db engines in general, which in turn has explanatory value for this article. — Preceding unsigned comment added by 188.8.131.52 (talk) 06:35, 26 June 2012 (UTC)