text: -- DROP database workdatabase;
  CREATE DATABASE workdatabase;
  SHOW DATABASES;
  USE workdatabase;
  
  CREATE TABLE Worker (
  	WORKER_ID INT NOT NULL PRIMARY KEY AUTO_INCREMENT,
  	FIRST_NAME CHAR(25),
  	LAST_NAME CHAR(25),
  	SALARY INT(15),
  	JOINING_DATE DATETIME,
  	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');