What Do You Mean By PostgreSQL?

Amar Kayam
Jul 25, 2017 · 2 min read

An object-relational Database Management and a general purpose system otherwise called as PostgreSQL is the latest open source database system. Postgres 4.2 at Berkeley Computer Science Department, University of California was the basis of the development of PostgreSQL.

For running on UNIX-like platforms the program designed was called as PostgreSQL. It has a good portability with varied platforms like Mac OS X, Windows, and Solaris.

It is a free and open source software. A free open source license called as Postgre license has its source code. PostgreSQL can be easily modified, used, and distributed into any form.

Very less efforts are required due to the stability of PostgreSQL. Applications based on PostgreSQL’s development the cost of the ownership is very less in comparison with other database management systems.

Highlights of PostgreSQL Features

There are many advanced features of PostgreSQL that has to be offered by other database management systems, like:

Sophisticated locking mechanism

Multi-version concurrency control (MVCC)

User-defined types

Asynchronous replication

Foreign key referential integrity

Rules, subquery, views

Nested transactions (savepoints)

Asynchronous replication

PostgreSQL and Their Recent Versions Support The Following Features

Native Microsoft Windows Server Version

Tablespaces

Point-in-time recovery

In each new release more new features are added

How is PostgreSQL Different?

Implementation of multi-version concurrency control of PostgreSQL is the first database management system even before Oracle. A snapshot isolation in Oracle has the MVCC feature. An object-relational database management and a general-purpose system, PostgreSQL helps you to add custom functions developed using programming languages like C/C++, Java, etc.

It is extensively designed for you to declare your datatypes, functional languages, index types, etc. Any part of the system can develop a custom plugin to develop for meeting your requirements in case you dont like any part of the system. Eg: adding a new optimizer.

In case you need support an active community is available for help. PostgreSQL community is available for you to support. All the answers are available in the community to resolve your issues. If you need any support there are companies to offer help.

PostgreSQL Usage

People who use PostgreSQL

There are some products and solutions built by some companies with the help of PostgreSQL. Apple, Fujitsu, Red hat, Juniper Network, Cisco, etc. are some of the featured companies. There are some of the sections that complete the list of organizations for using PostgreSQL just check it out with the PostgreSQL featured users.

There are some fundamental topics in PostgreSQL like

PostgreSQL Select

PostgreSQL Order By

PostgreSQL LIMIT

PostgreSQL IN

PostgreSQL INNER JOIN

PostgreSQL Cross Join

PostgreSQL Natural Join

PostgreSQL Having

PostgreSQL Union

PostgreSQL Insert

PostgreSQL Subquery

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