1. Create the DEPT table based on the following table instance chart. Place the syntax in a script called lab9_1.sql, then execute the statement in the script to create the table. Confirm that the table is created. 2. Populate the DEPT table with data from the DEPARTMENTS table. Include only columns that you need. 3. Create the EMP table based on the following table instance chart. Place the syntax in a script called lab9_3.sql, and then execute the statement in the script to create the table. Confirm that the table is created. 4. Modify the EMP table to allow for longer employee last names. Confirm your modification. 5. Confirm that both the DEPT and EMP tables are stored in the data dictionary. (Hint: USER_TABLES) 6. Create the EMPLOYEES2 table based on the structure of the EMPLOYEES table. Include only the EMPLOYEE_ID, FIRST_NAME, LAST_NAME, SALARY, and DEPARTMENT_ID columns. Name the columns in your new table ID, FIRST_NAME, LAST_NAME, SALARY , and DEPT_ID, respectively. 7. Drop the EMP table. 8. Rename the EMPLOYEES2 table to EMP. 9. Add a comment to the DEPT and EMP table definitions describing the tables. Confirm your additions in the data dictionary. COMMENT ON TABLE emp IS ’Employee Information’; COMMENT ON TABLE dept IS ’Department Information’; 10. Drop the FIRST_NAME column from the EMP table. Confirm your modification by checking the description of the table. 11. In the EMP table, mark the DEPT_ID column in the EMP table as UNUSED. Confirm your modification by checking the description of the table. 12. Drop all the UNUSED columns from the EMP table. Confirm your modification by checking the description of the table.