The best replacement for mysql is postgresql.

The best alternatives to mysql are rated as following:
★★★★★  postgresql
★★★★  sql
★★★★  sql server
★★★  oracle
★★★  mysqli
★★  access
★★  mssql
★★  sqlite
★  mongodb
★  postgres
★  mariadb
★  nosql
  ms sql
  clause
  microsoft sql
  ms access
  sql server performance
  query
  ms sql server
  oracle sql
  mysqld
  filemaker
  oracle database
  oracle performance
  sql express
  where
  die error
  tsql
  sql server 2005
  sql server express
  microsoft sql server
  microsoft access
  derby
  mongodb youtube
  percona
  mysql2
  db2
  like
  postgre
  sql server 2008
  cassandra
  sql 2000
  firebird

Your alternative for mysql is not listed? Suggest!
Speaking about mysql, one probably shouldn't forget about php.

Other search terms related to mysql and their ratings are:
★★★★★ php
★★★★ rollup
★★★ java
★★ server
★★ clause
★★ phpmyadmin
★★ python
★★ primary key
★ c#
★ asp.net
★ apache
★ asp
★ recursive
★ innodb
★ root password
★ django
★ node.js
★ visual studio 2013
★ odbc
★ pdo
vb
entity framework
net
visual basic
my cnf
.net
perl
r
limit
iis
delphi
order by
column name
replication
ruby on rails
mysql
jsp
joins
tomcat
enter password
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