Definition of DBMS and RDBMS

DBMS: [Database Management System]

is a software which maintains and manages the database, DBMS provides two important features

1. Security: to protect the data

2. Authorization: it is used to access the data.

To communicate with DBMS software we use query language

Types of DBMS

1. Network DBMS

2. Hardware DBMS

3. RDBMS etc

To communicate with RDBMS software we use a language called structure query language.

• Relational Model was designed by EFCODD

• Relational Model store the data in the form of tables/relations

• In relational Model RDBMS we can store Meta Data ( data about the another data is called Meta Data)