PostgreSQL: The World's Most Advanced Open Source Relational Database. PostgreSQL comes with many features aimed to help developers build applications, administ

PostgreSQL: The World's Most Advanced Open Source Relational Database. PostgreSQL comes with many features aimed to help developers build applications, administrators to protect data integrity and build fault-tolerant environments, and help you manage your data no matter how big or small the dataset. In addition to being free and open source, PostgreSQL is highly extensible. For example, you can define your own data types, build out custom functions, even write code from different programming languages without recompiling your database