MySQL is a fast, stable and true multi-user, multi-threaded SQL database
 server. SQL (Structured Query Language) is the most popular database query
 language in the world. The main goals of MySQL are speed, robustness and
 ease of use.
 
 This package includes the client library.

 libnss-mysql-bg provides a Name Service Switch module that allows MySQL
 to act as a name service.
 
 Its configuration is very flexible by allowing to set an SQL query per NSS
 call (getpwnam, getpwuid, ...). You would use it instead of the other
 "libnss-mysql" package for building an NSS over an existing database (used for
 another purpose like groupware, ...).
 
 It currently supports storage of passwd, group and shadow informations.