Question: EMP Columns Constraints Datatype Size Number 3 E_ID Primary key E_Name Varchar2 15 D_ID Varchar23 Foreign key Salary Number 8,2 a. Write a SQL query

EMP Columns Constraints Datatype Size Number 3 E_ID Primary key E_Name Varchar2 15 D_ID Varchar23 Foreign key Salary Number 8,2 a. Write a SQL query to add constraint UNIQUE to the column Salary with a suitable constraint 1 (1.5 Marks) b Write an SQL query to remove the table from the database. (1Mark) name

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