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PostgreSQL benefits from 15 years of active development that have led to unlimited database size, unlimited rows per table and unlimited indexes per table. As Open Source object relational database system, it represents a pinnacle in cross-platform integration, ACID compliance and foreign keys, triggers, procedures or joins.
With native programming interfaces and a complete documentation on everything you need to do, this software remains highly customizable in terms of the function library. Additionally, support for sub-queries, transaction isolation levels, multiple schema per database, and the integration of extensions and of the Generalized Search Tree add further flexibility the large array of functions.