Question 659 Consider a database table R with attributes A and B. Which of the following SQL queries is illegal ? A SELECT A FROM R; […]

Question 667 An attribute A of data type varchar (20) has value ‘Ram’ and the attribute B of data type char (20) has value ‘Sita’ in […]

Question 668 Consider the database state for the two tables given below: SQL query- INSERT INTO DEPT(Dname,Dnum,Mgr_SSn) VALUES (Dept2,3,Mgr3) Is rejected because of A Duplication of […]