Introduction
Project Homepage: http://code.google.com/p/erlang-mysql-driver/
This MySQL driver for Erlang is based on the Yxa driver obtained from Process One (at https://support.process-one.net/doc/display/CONTRIBS/Yxa). It includes several new features such as prepared statements, transactions, binary queries, type-converted query results, more efficient logging and a new connection pooling mechanism.
Mnesia v.s. MySQL
See http://yarivsblog.com/articles/2006/09/25/mnesia-mysql-its-the-same-transaction/.