What is a relational database management system (RDBMS)? What are some RDBMS examples?

This is among the most frequently asked data science interview questions.

A relational database management system (RDBMS) is a database management system that is based on a relational model.

Some examples of RDBMS are MS SQL Server, IBM DB2, Oracle, MySQL, and Microsoft Access.

Interviewers often ask such data science interview questions and you must prepare for such abbreviations.