Small. Fast. Reliable.
Choose any three.
*** 16,18 ****
--- 16,21 ----
      recently open-sourced by ITTIA.
  
  *: What about EmbeddedMySQL?: ({link: http://dev.mysql.com/doc/mysql/en/libmysqld_overview.html description})  I don't know enough to do a comparison myself, but it seems to have a lot of overlap.
+ 
+ A big turn off for EmbeddedMySQL is their license - here's an extract:
+ _:"The MySQL source code is covered by the GNU GPL license (see section G GNU General Public License). One result of this is that any program which includes, by linking with libmysqld, the MySQL source code must be released as free software (under a license compatible with the GPL)." (added by {link:http://www.smartpethealth.com DV})