Differences

MySQL is a purely relational database.

• MySQL is a relational database management system that lets you store data as tables with rows and columns.

PostgreSQL is an object-relational database.

• PostgreSQL is an object-relational database management system that offers more features than MySQL
  • It gives more flexibility in data types, scalability, concurrency, and data integrity.

Implications

This means that in PostgreSQL, you can store data as objects with properties.

Working with PostgreSQL is more intuitive for database developers.

PostgreSQL also supports other additional data types like arrays and XML.