- What is database?
 - Why we use database?
 - How front end of web application interacts with back-end part of database?
 - What is primary key?
 - What is foreign key? How is it different from primary key?
 - What is a unique key and how is it different from primary key?
 - Why we need different tables to store data? Why data can not be saved in one table?
 - What is called normalization?
 - What are various data types available for columns in table?
 - What is a table in a database?
 - Can you enlist names of commercial databases available in market?
 - What is SQL?
 
	
								