Comprehension: Consider the following table structures related to a university for given questions.
EMPLOYEE
|
NAME |
VARCHAR (30) |
NOT NULL, |
|
EID |
VARCHAR (10) |
NOT NULL, |
|
DEPTNO |
INT (5) |
NOT NULL, |
|
HODEID |
VARCHAR (10), |
|
|
SALARY |
INT (10), |
|
PRIMARY KEY (EID),
FOREIGN KEY (HODEID) REFRENCES EMPLOYEE (EID),
FOREIGN KEY (DEPTNO) REFRENCES DEPARTMENT (DID);
DEPARTMENT
|
DID |
INT (5) |
NOT NULL, |
|
DNAME |
VARCHAR (30) |
NOT NULL, |
|
HODID |
VARCHAR (10) |
NOT NULL, |
|
HODNAME |
VARCHAR (30), |
|
PRIMARY KEY (DID),
UNIQUE (DNAME),
FOREIGN KEY (HODID) REFERENCES EMPLOYEE (EID),
PROJECT WORE:
|
EMPID |
VARCHAR (10) |
NOT NULL, |
|
PROJNO |
INT (5) |
NOT NULL, |
|
PROJECTLOC |
VARCHAR (30) |
NOT NULL, |
PRIMARY KEY (EMPID, PROJNQ),
FOREIGN KEY (EMPID) REFERENCES EMPLOYEE (EID),
In reference to the above given table structures, which of the following query/queries will drop the ‘SALARY’ column from 'EMPLOYEE' table ?
(A) ALTER TABLE EMPLOYEE DROP SALARY CASCADE;
(B) ALTER TABLE EMPLOYEE DROP SALARY RESTRICT;
(C) ALTER EMPLOYEE DROP SALARY:
Choose the correct answer from the options given below: