5b31a204aa
* Add materialized views * Make simple views auto-updatable * Add many features for the JSON data type, including operators and functions to extract elements from JSON values * Implement SQL-standard LATERAL option for FROM-clause subqueries and function calls * Allow foreign data wrappers to support writes (inserts/updates/deletes) on foreign tables * Add a Postgres foreign data wrapper to allow access to other Postgres servers * Add support for event triggers * Add optional ability to checksum data pages and report corruption * Prevent non-key-field row updates from blocking foreign key checks * Greatly reduce System V shared memory requirements
9 lines
450 B
Text
9 lines
450 B
Text
PostgreSQL is a robust, next-generation, Object-Relational DBMS (ORDBMS),
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derived from the Berkeley Postgres database management system. While
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PostgreSQL retains the powerful object-relational data model, rich data types
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and easy extensibility of Postgres, it replaces the PostQuel query language
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with an extended subset of SQL.
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PostgreSQL is free and the complete source is available.
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This is the meta-package for the PostgreSQL database system.
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