mysql-server 5.7.15-0ubuntu0.16.04.1 (i386 binary) in ubuntu xenial

 This is an empty package that depends on the current "best" version of
 mysql-server (currently mysql-server-5.7), as determined by the MySQL
 maintainers. Install this package if in doubt about which MySQL
 version you need. That will install the version recommended by the
 package maintainers.
 .
 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.