What do you mean by data? How is it different from information, explain by example?

2 Explain the difference between a DBMS and a database

3 Explain the three schema architecture of a DBMS with the help of diagram. Why do we need mappings between the different schema levels? Also explain the main advantages of DBMS.

4 What are the main responsibilities of DBA?

5 What are the eight major components of database system?

6 Distinguish between the Entity—Relationship model and the Entity—Relationship diagram.

7 Define the term ER diagram. Explain the various types of relationships in a ER diagram.

8 Distinguish between the Entity—Relationship model and the Entity—Relationship diagram.