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PostgreSQL (/ ˌ p oʊ s t ɡ r ɛ s k j u ˈ ɛ l / POHST-gres-kew-EL) [11] [12] also known as Postgres, is a free and open-source relational database management system (RDBMS) emphasizing extensibility and SQL compliance.
EnterpriseDB (EDB) is an American company that provides software and services based on the open-source database PostgreSQL (also known as Postgres), and is one of the largest contributors to Postgres. [2]
PostgreSQL: PostgreSQL License Postgres Plus Advanced Server: Proprietary Progress Software: Proprietary R:Base: Proprietary RethinkDB: Apache License 2.0 SAND CDBMS: Proprietary SAP HANA: Proprietary SAP Adaptive Server Enterprise: Proprietary SAP IQ (formerly known as Sybase IQ) Proprietary SingleStore: Proprietary Snowflake Cloud Data ...
PostGIS (/ ˈ p oʊ s t dʒ ɪ s / POST-jis) is an open source software program that adds support for geographic objects to the PostgreSQL object-relational database. PostGIS follows the Simple Features for SQL specification from the Open Geospatial Consortium (OGC). PostGIS is implemented as a PostgreSQL external extension. [2]
By the next decade, PostgreSQL had become a commercially viable database, and is the basis for several current products that maintain its ORDBMS features. Computer scientists came to refer to these products as "object–relational database management systems" or ORDBMSs.
In September 2019, Greenplum Database Version 6 was released. Version 6 is based on PostgreSQL version 9.4 and features massive gains in [23] OLTP performance. Greenplum 6 was reviewed in the media by several sources and mentioned for its Postgres open source alignment [24] and for its OLTP performance [25]
SQL was initially developed at IBM by Donald D. Chamberlin and Raymond F. Boyce after learning about the relational model from Edgar F. Codd [12] in the early 1970s. [13] This version, initially called SEQUEL (Structured English Query Language), was designed to manipulate and retrieve data stored in IBM's original quasirelational database management system, System R, which a group at IBM San ...
Formally, a "database" refers to a set of related data accessed through the use of a "database management system" (DBMS), which is an integrated set of computer software that allows users to interact with one or more databases and provides access to all of the data contained in the database (although restrictions may exist that limit access to particular data).