dbray, Sql Server - rextester

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CREATE TABLE Worker (
    WORKER_ID INT NOT NULL PRIMARY KEy,
    FIRST_NAME CHAR(25),
    LAST_NAME CHAR(25),
    SALARY INT(15),
    JOINING_DATE DATE,
    DEPARTMENT CHAR(25)
);

INSERT INTO Worker 
    (WORKER_ID, FIRST_NAME, LAST_NAME, SALARY, JOINING_DATE, DEPARTMENT) VALUES
        (001, 'Monika', 'Arora', 100000, '14-02-20 09.00.00', 'HR'),
        (002, 'Niharika', 'Verma', 80000, '14-06-11 09.00.00', 'Admin'),
        (003, 'Vishal', 'Singhal', 300000, '14-02-20 09.00.00', 'HR'),
        (004, 'Amitabh', 'Singh', 500000, '14-02-20 09.00.00', 'Admin'),
        (005, 'Vivek', 'Bhati', 500000, '14-06-11 09.00.00', 'Admin'),
        (006, 'Vipul', 'Diwan', 200000, '14-06-11 09.00.00', 'Account'),
        (007, 'Satish', 'Kumar', 75000, '14-01-20 09.00.00', 'Account'),
        (008, 'Geetika', 'Chauhan', 90000, '14-04-11 09.00.00', 'Admin');

/*CREATE TABLE Bonus (
    WORKER_REF_ID INT,
    BONUS_AMOUNT INT(10),
    BONUS_DATE DATETIME,
    FOREIGN KEY (WORKER_REF_ID)
        REFERENCES Worker(WORKER_ID)
        ON DELETE CASCADE
);

INSERT INTO Bonus 
    (WORKER_REF_ID, BONUS_AMOUNT, BONUS_DATE) VALUES
        (001, 5000, '16-02-20'),
        (002, 3000, '16-06-11'),
        (003, 4000, '16-02-20'),
        (001, 4500, '16-02-20'),
        (002, 3500, '16-06-11');
CREATE TABLE Title (
    WORKER_REF_ID INT,
    WORKER_TITLE CHAR(25),
    AFFECTED_FROM DATETIME,
    FOREIGN KEY (WORKER_REF_ID)
        REFERENCES Worker(WORKER_ID)
        ON DELETE CASCADE
);

INSERT INTO Title 
    (WORKER_REF_ID, WORKER_TITLE, AFFECTED_FROM) VALUES
 (001, 'Manager', '2016-02-20 00:00:00'),
 (002, 'Executive', '2016-06-11 00:00:00'),
 (008, 'Executive', '2016-06-11 00:00:00'),
 (005, 'Manager', '2016-06-11 00:00:00'),
 (004, 'Asst. Manager', '2016-06-11 00:00:00'),
 (007, 'Executive', '2016-06-11 00:00:00'),
 (006, 'Lead', '2016-06-11 00:00:00'),
 (003, 'Lead', '2016-06-11 00:00:00');*/
 
 select * from Worker ;

View schema
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