What is PostgreSQL?

PostgreSQL is an all-purpose and object-relational database management system, and it is the most advanced open-source database system. PostgreSQL was developed initially based on POSTGRES 4.2 at the Berkeley Computer Science department at the University of California.

PostgreSQL was designed and developed to run on UNIX-like systems. Nevertheless, PostgreSQL was then also developed to be portable so that it could work on several other platforms such as Solaris, Mac OS X, and Windows.

PostgreSQL is free and open-source computer software. Its source code is made available under the PostgreSQL License, which is a liberal and open-source license. You are free to use, modify and distribute PostgreSQL in any form that you feel.

PostgreSQL requires very little effort to maintain because of its stability.  Therefore, if you build a software application that is based on PostgreSQL, the entire cost of ownership is very low when compared to other relational database management systems.

PostgreSQL is the first database management system that completely implements a multi-version concurrency control (MVCC) feature, even before Oracle. The MVCC feature in PostgreSQL is known as snapshot isolation in Oracle.

PostgreSQL is an all-purpose object-relational database management system. It lets you include custom functions that are developed with various programming languages such as Java, C/C++, etc.

PostgreSQL was developed to be modular and extensible. In PostgreSQL, you can define your own data types, functional languages, index types, etc. If you don’t like any part of the system, you can always develop a custom plugin to further enhance it to meet your requirements, for example, adding a new optimizer.

Features of PostgreSQL

There are many features of PostgreSQL and some of them are:

1. PostgreSQL is compatible with several platforms by using all major middleware and languages.

2. PostgreSQL offers a very strong and sophisticated locking mechanism.

3. PostgreSQL Support for multi-version concurrency control.

4. PostgreSQL allows for a more Mature Server-Side Programming Functionality.

5. PostgreSQL is compliant with the ANSI SQL standard.

6. PostgreSQL offers full support for client to server network architecture.

7. PostgreSQL has both a Log-based and trigger-based replication SSL feature.

8. PostgreSQL has a standby server and a high availability feature.

9. PostgreSQL is compatible with Object-oriented and ANSI-SQL2008.

10. PostgreSQL offers support for JSON and it allows you to link with other data stores like NoSQL which works as a federated hub for multilingual database systems.

Benefits of PostgreSQL

There are many benefits of PostgreSQL and some of them are

1. PostgreSQL can be used to run dynamic websites and web apps as an option in the LAMP stack.

2. PostgreSQL's write-ahead logging feature makes it to be a highly fault-tolerant database.

3. The source-code of PostgreSQL is made freely available under an open source license. This allows you the freedom to modify, use, and implement it as per your business requirement.

4. PostgreSQL supports other geographic objects so you can use it for developing location-based services and geographic information systems.

5. PostgreSQL supports geographic objects so it can be used as a geospatial data store for location-based data services and geographic information systems

6. To learn Postgres, you don't need much training since PostgreSQL is very easy to use.

7. PostgreSQL has a low cost of maintenance for both embedded and enterprise use.

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