Below is a comparative study of PostgreSQL and MySQL.
| PostgreSQL | MySQL |
| More densely featured database system. | Known for its fast speed and ease of use. |
| Unified database server having a single storage engine. | Multi-layer structure having a set of storage engines. |
| Provides reliability, data integrity, and developers-friendly features. | Generally used with PHP to deal with web pages and optimize simple queries. |
| Developed with a focus on features and standards. | Developed with a focus on speed. |
| Secure, independent, and feature-rich open-source database. | Secure, independent, but less featured database. |
| Follows the SQL standards. | Follows the SQL standards. |
| More reliable on large and complex operations. | Generally used on simple operations. |
| Supports a lot of advanced data types. | Supports various data types. |
| Provides all performance optimization that is supported in Oracle and SQL Server. | Provides performance optimization. |
| Less popular in terms of DB ranking. | More popular in terms of DB ranking. |
| Supports “advanced” SQL stuff. | Supports “advanced” SQL stuff. |
| Getting community support and search answers is a bit difficult. | Getting community support and search answers is easier. |
| Replication is not so well implemented. | Replication is well implemented. |
| Utilized by companies like Amazon, Redshift, and Instagram. | Utilized by companies like Facebook, Twitter, and Pinterest. |
