RDBMS on Stack Overflow trends

Stack Overflow provided a great tool for creating charts. This is mine for “PostgreSQL vs MySQL vs Oracle vs MSSQL”.

postgresql-mysql-oracle-mssql-sotrends

PostgreSQL vs MySQL vs Oracle vs MSSQL on Stack Overflow trends

PS Oracle and MSSQL have some additional tags depending on version. However, I’m sure we may not include them into statistics because the main tag is always used IMO.