Some popular relational database management systems (RDBMS) are Oracle, MySQL, SQL Server, and PostgreSQL. Here's a basic schema that shows how a relational database works. To query data in a RDBMS, we use Structured Querying Language (SQL). With SQL we can create new records, update them, and more.
How do I know which database to use?
SQLite, a powerful Relational Database Management System (RDBMS), is also very easy to learn and to practice simple queries. It is very essential to become familiar with the basics of the most popular SQL Databases.