PostgreSQL

About PostgreSQL

PostgreSQL is an open source object-relational database system. It is ACID compliant and strongly conforms to ANSI SQL 2008 standards. With the ability to run stored procedures in many popular programming languages, PostgreSQL is also very customizable.

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Highlights

• It contains comparable enterprise class features such as full ACID compliance for outstanding transaction reliability and Multi-Version Concurrency Control for supporting high concurrent loads.
• It is an object-relational database management system with an emphasis on extensibility and standards-compliance.
• Data integrity features include (compound) primary keys, foreign keys with restricting and cascading updates/deletes, check constraints, unique constraints, and not null constraints.