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PostgreSQL is an object-relational database management system (ORDBMS) based on POSTGRES, Version 4.2. The latter was developed at the university of California in the Berkeley computer science department.

PostgreSQL is an OpenSource descendant of the original Berkeley code. It supports a large part of the SQL standard while at the same time offering many modern features:

  • triggers;

  • views;

  • concurrent access control (MVCC or multiversion concurrency control).


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