Answers for "how to have multiple foreign keys in one column"

foreign key multiple columns

CREATE TABLE Employee(
    EmployeeID int NOT NULL PRIMARY KEY,
    LastName varchar(50) NOT NULL,
    FirstName varchar(20) NOT NULL,
    Age int,
    DeptNo int,
    PRIMARY KEY (EmployeeID),
    CONSTRAINT FK_PersonOrder FOREIGN KEY (DeptNo)
    REFERENCES Department(DeptNo)
);