Question: Question 6 Not yet answered Choose the command to enable unique constraint sal_uni on salary column in Employees table. Emplovee Table: Eid EName Salary JoinDate

Question 6 Not yet answered Choose the command to enable unique

Question 6 Not yet answered Choose the command to enable unique constraint sal_uni on salary column in Employees table. Emplovee Table: Eid EName Salary JoinDate Marked out of 1.00 Flag question E11 Khalid 1000 10-10-2019 E12 Asma 500 20-05-2018 E13 Ali 600 25-06-2019 E14 Zahra 1000 15-02-2019 O a. ALTER TABLE EMPLOYEES DISABLE CONSTRAINT sal_uni; O b. ALTER TABLE EMPLOYEES ENABLE CONSTRAINT sal_uni; O c. ALTER TABLE EMPLOYEES ENABLE CONSTRAINT UNIQUE (salary); O d. ALTER TABLE EMPLOYEES ENABLE sal_uni

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