Why Ms Access Is Called Rdbms?

Since MS Access uses the "classic" field/table/foreign key model of storing data, it's underlying database model is relational. Thus, MS Access is an RDBMS.

Why is MS Access also called RDBMS?

Because every RDBMS let the user to access information simultaneously and sets relation among tables and MS Access also do the same.

Is Microsoft Access is a RDBMS?

Microsoft Access is a file server-based database. Unlike client–server relational database management systems (RDBMS), Microsoft Access does not implement database triggers, stored procedures, or transaction logging.