PostgreSQL is an object-relational database management system based on POSTGRES.

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PostgreSQL download and review

4/5 rating by My Open Source

PostgreSQL features

PostgreSQL supports SQL92 and SQL99 standards and offers modern features:

• complex queries
• foreign keys
• triggers
• views
• transactional integrity
• multi-version concurrency control

PostgreSQL is extensible

For example by adding new:

• data types
• functions
• operators
• aggregate functions
• index methods
• procedural languages

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