Technology

Difference between MySQL and PostgreSQL

Main difference

MySQL is a relational database management system RDBMS. PostgreSQL is an object relational database management system (ORDBMS). MySQL is developed by Oracle and PostgreSQL is developed by PostgreSQL Global Development Group. Free versions of MySQL are available under the GNU General Public License and commercial versions are also available under the GNU General Public License, while PostgreSQL is available under the PostgreSQL License. Both MySQL and PostgreSQL are open source. There are many differences between MySQL and PostgreSQL based on governance, supported platforms, access methods, partitioning, and replication.

What is MySQL?

MySQL is a relational database management system (RDBMS) developed by Oracle. It is an open source. Free versions of MySQL are available under the GNU General Public License and commercial versions are also available under the GNU General Public License. MySQL focuses on reading web applications mostly written in PHP.

What is PostgreSQL?

PostgreSQL is an object relational database management system (ORDBMS) and is available under the PostgreSQL license. It is developed by PostgreSQL Global Development Group. PostgreSQDL is closer to the ANSI SQL standard. PostgreSQL focuses on reliability, data integrity, and developer-centric built-in features.

Key differences

  1. MySQL is an RDBMS relational database management system, while PostgreSQL is an object relational database management system (ORDBMS).
  2. MySQL is developed by Oracle and PostgreSQL is developed by PostgreSQL Global Development Group.
  3. MySQL uses MySQL partitioning technology to store data on different database nodes, while PostgreSQL does not implement true partitioning.
  4. Partitioning is done in MySQL to perform horizontal grouping, while a similar capability is realized in PostgreSQL through table inheritance.
  5. MySQL performance is faster compared to PostgreSQL.
  6. Subselects are available with PostgreSQL but not in MySQL.
  7. Foreign key support is available in PostgreSQL but not in MySQL.
  8. Triggers are available in PostgreSQL but not in MySQL.
  9. Joins are available in PostgreSQL but not in MySQL.
  10. Constraints are available in PostgreSQL but not in MySQL.
  11. The void (cleanup) is available in PostgreSQL but not in MySQL.
  12. PostgreSQDL is closer to the ANSI SQL standard, while MySQL does not fully support ANSI SQL.
  13. Database design is simpler in MySQL compared to PostgreSQL.

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