Knowledge Base of Relational and NoSQL Database Management Systemsprovided by solid IT

DBMS > PostgreSQL

PostgreSQL System Properties

Please select another system to compare it with PostgreSQL.

Our visitors often compare PostgreSQL with MySQL, Oracle and MariaDB.

Editorial information provided by DB-Engines
DescriptionBased on the object relational DBMS Postgres Developed as objectoriented DBMS, gradually enhanced with 'standards' like SQL
Database modelRelational DBMS with object oriented extensions, e.g.: user defined types/functions and inheritance. Handling of key/value pairs with hstore module.
DB-Engines Ranking measures the popularity of database management systems
Trend Chart
Rank#4  Overall
#4  Relational DBMS
Technical documentationwww.postgresql.org/­docs/­manuals
DeveloperPostgreSQL Global Development Group www.postgresql.org/­developer
Initial release1989 1989: Postgres, 1996: PostgreSQL
Current release9.6.1, October 2016
LicenseOpen Source BSD
Cloud-based Only available as a cloud serviceno
Implementation languageC
Server operating systemsFreeBSD
Data schemeyes
Typing predefined data types such as float or dateyes
Secondary indexesyes
SQL Support of (almost full) SQL standard (DML, DDL and DCL statements)yes standard with numerous extensions
APIs and other access methodsnative C library
streaming API for large objects
Supported programming languages.Net
Server-side scripts Stored proceduresuser defined functions realized in proprietary language PL/pgSQL or with common languages like Perl, Python, Tcl etc.
Partitioning methods Methods for storing different data on different nodesno, but can be realized using table inheritance for each partition a subtable, inserts are controlled with triggers
Replication methods Methods for redundantly storing data on multiple nodesMaster-slave replication other methods possible by using 3rd party extensions
MapReduce Offers an API for user-defined Map/Reduce methodsno
Consistency concepts Methods to ensure consistency in a distributed systemImmediate Consistency
Foreign keys Referential integrityyes
Transaction concepts Support to ensure data integrity after non-atomic manipulations of dataACID
Concurrency Support for concurrent manipulation of datayes
Durability Support for making data persistentyes
In-memory capabilities Is there an option to define some or all structures to be held in-memory only.no
User concepts Access controlfine grained access rights according to SQL-standard

More information provided by the system vendor

We invite representatives of system vendors to contact us for updating and extending the system information,
and for displaying vendor-provided information such as key customers, competitive advantages and market metrics.

3rd party products and services

We invite representatives of 3rd party vendors to contact us for presenting information about their offerings here.

More resources
DB-Engines blog posts

PostgreSQL moves up one rank at the expense of MongoDB
1 September 2016, Paul Andlinger

MySQL, PostgreSQL and Redis are the winners of the March ranking
2 March 2016, Paul Andlinger

Big gains for Relational Database Management Systems in DB-Engines Ranking
2 February 2016, Matthias Gelbmann

show all

Conferences and events

PGCon 2017
Ottawa, Canada, 25-26 May 2017

Recent citations in the news

AWS goes after Oracle with new PostgresSQL support in Aurora
30 November 2016, TechCrunch

AWS to launch Aurora service for PostgreSQL at re:Invent – report ...
23 November 2016, The Register

AWS adds PostgreSQL compatibility to Amazon Aurora
5 December 2016, Cloud Pro

Exclusive: Amazon To Play Up New Database, Artificial Intelligence at Cloud Confab
22 November 2016, Fortune

Report: Amazon Web Services to launch cloud database service next week
24 November 2016, SiliconANGLE (blog)

provided by Google News

Share this page

Featured Products

Datastax delivers Apache Cassandra as part of a database platform purpose built for IOT, Web and Mobile Apps. Download now.

Semantic Graph Database Leader - Add The Power of Cognitive Probability Graphs - Unique Graph Visualizations - Free Download

Power, flexibility & scale.
All open source.
Get started now.

Get your step-by-step guide comparing RDBMS to graph databases, including data models, query languages, and deployment strategies.

Present your product here