Q11. Which of the following will help to maintain unique record in the table?
Q12. Which of the following field of table "Book" can act as primary key?
Q13. When primary key is made up of two or more columns then it is called ____________ primary key
Q14. Duplicate values can be entered in primary key.(T/F)
Q15. A key which is referring to the primary key of another table is called ____________
Q16. A field which is ___________ for each and every record is called Primary key.
Q17. When data is stored, maintained and retrieved from multiple tables then special database software are required called ________
Q18. Identify the Foreign Key from table "Sales"
ClientID (primary Key)
Table : Sales
SalesID (Primary Key)
Q19. Which of the following is not valid field of table "Student"
Q20. There can be multiple primary key in a table.(T/F)