Past Papers 12th Class Computer Science Ch 2

Past Papers 12th Class Computer Science Ch 2 Questions

• Define Foreign Key.
• Who as data administrator?
• What is the purpose of using views?
• What is the difference between primary key and foreign key?
• Define the term relation.
• Define entity.
• What is primary key?
• List different types of keys.
• Differentiate between primary key and secondary key.
• Define composite key.
• Differentiate between candidate key and primary key.
• Who is database administrator?
• How a relation formed in database?
• What is secondary key?
• Who is End user?
• Differentiate between Fixed Length Field and Variable Length Field.
• Write two responsibilities of a database administrator.
• What is meant by data modeling?
• What are views?
• Define key?
• What is the basic purpose of using views?
• Write three important characteristics of a primary key?
• Why are key define tables?