Q11. Candidate Key - Primary Key = __________________
Q12. Which of the following key uniquely identify the record?
Q13. Which of the following key will derived its value from Primary Key?
Q14. Which of the following will be preferred as primary key in table "Employee"
Q15. A field which can act as a primary key is called _________
Q16. A candidate key which is not a primary key is called __________
Q17. Which of the following constraint allow to enter null value?
Q18. If one table has 4 tuples and 6 attributes. What is the degree of table?
Q19. Which type of command is used to create table?
Q20. Which of the following is not a type of SQL Command?
