apt - Unable to locate package mysql-server

I installed ubuntu 16.04, after that when i try to install mysql it shows error as

$ sudo apt-get update
[sudo] password for mcerc:
Reading package lists... Done
mcerc@mcerc-ThinkCentre-M72e:~$ sudo apt-get install mysql
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package mysql
mcerc@mcerc-ThinkCentre-M72e:~$ sudo apt-get install mysql-server
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package mysql-server
mcerc@mcerc-ThinkCentre-M72e:~$ ^C
mcerc@mcerc-ThinkCentre-M72e:~$