PostgreSQL versus Other RDBMSs
One of the first questions asked by new users to RDBMSs is, “Which one is best?” That question is nearly impossible to answer without a full understanding of the database’s required functionality.
Comparing databases is like comparing vehicles. Each type of vehicle is suited for a particular task; motorcycles would be preferable over pickup trucks in some situations and would be disastrous in others. Likewise, the required functionality of a RDBMS must be understood before the right fit can be established.
In lieu of trying to compare apples to oranges, the following sections will give a brief listing of the popular RDBMSs currently available and will list their strong and weak points as well as their typical uses. ...