MySQL vs PostgreSQL

Relational databases became popular thanks to management systems that implement the relational model, which has been in use for a long time and also proven to be a great way to work with data.
mysql vs postgresql

Developers are comparing MySQL and PostgreSQL for the past ten years. Those who support PostgreSQL argue that its standards support and ACID compliance outweighs MySQL's speed. MySQL remains popular thanks to its inclusion in every Linux Web hosting package, but ever since Oracle bought Sun, which owned the MySQL copyright and trademark, there have been widespread concerns that the platform isn’t quite as open-source as before. Meanwhile, PostgreSQL added JSON, that making it one of the few relational databases to also support NoSQL.

Basic introduction of MySQL and PostgreSQL

MySQL is a relational database management system currently developed by Oracle with open-source code. This code is available for free under the GNU General Public License, and commercial versions of MySQL are also available under various proprietary agreements.

Whereas, PostgreSQL is an object-RDBMS, which developed by the PostgreSQL Global Development Group. It also has an open source, and released under the permissive PostgresSQL License.
Let’s take a look at the differences between MySQL and PostgreSQL:

1. Fully ACID Compliant - PostgreSQL has one storage engine, where MySQL has nine, but only two of those really matter to most users - MyIsam and InnoDB. MyIsam was the original engine, built for speed, but it lacked transactions. InnoDB has transactions and is speedier than MyIsam, which is why it’s the default storage engine. Both MySQL’s InnoDB and PostgreSQL are fully ACID compliant, so there’s really no difference between the platforms.

2. ANSI Standard Compatible - Compared to earlier versions, MySQL has made progress in the standards area. MySQL support non-standard extensions if the customers like them. But with PostgreSQL, the standards were built into the platform from the start, whereas MySQL added them later.