| 🧩 | PostgreSQL PostgreSQL is a powerful, open source object-relational database system. |
| 🧩 | MySQL MySQL is an open-source relational database management system. |
| 🧩 | MariaDB MariaDB is a community-developed, commercially supported fork of the MySQL relational database management system. |
| 🧩 | PerconaDB PerconaDB is a scalable, secure and open-source distribution for MySQL. |
| 🧩 | MongoDB MongoDB is a document-oriented NoSQL database using JSON-like structures with optional schemas. |