What is RDBMS?

The standard for relational database management systems (RDBMS)
A database management system that manages data as a collection of tables in which all relationships are represented by common values in related tables.
Data in RDBMS is stored and sorted in the form of rows, columns (also called tuples and attribute in the DBMS language).

Difference between DBMS and RDBMS

DBMS	RDBMS
Data stored as a file.	Data is stored in the form of tables.
DBMS supports a single user.	RDBMS supports multiple users.
Data stores either in either a navigational or hierarchical form.	RDBMS uses tabular structures to store data, headers are the column names and the rows contains values.
The database does not support normalisation.	It supports the normalisation and joining of tables.
Does not support a distributed database.	Supports a distributed database.
Does not support client-server architecture.	Support client-server architecture.
No relationship between the data value	Data relationship with the help of foreign keys
Low software and hardware	High software and specialised DB hardware
DBMS was not made to handle a huge amount of data.	RDBMS can actually handle a very high amount of data.
Lack of security in the DBMS model of storing data,	More security of the data stored as several log files created
Example-XML,file system, etc.	Example- MYSQL, Oracle, SQL Server, etc