Copyright

begin   
   dbms_output.put_line('Copyright (c) 2018, Oracle and/or its affiliates.  All rights reserved.  ');  
   dbms_output.put_line('Permission is hereby granted, free of charge, to any person obtaining ');  
   dbms_output.put_line('a copy of this software and associated documentation files (the ');  
   dbms_output.put_line('"Software"), to deal in the Software without restriction, including ');  
   dbms_output.put_line('without limitation the rights to use, copy, modify, merge, publish, ');  
   dbms_output.put_line('distribute, sublicense, and/or sell copies of the Software, and to ');  
   dbms_output.put_line('permit persons to whom the Software is furnished to do so, subject to ');  
   dbms_output.put_line('the following conditions: ');  
   dbms_output.put_line(' ');  
   dbms_output.put_line('The above copyright notice and this permission notice shall be ');  
   dbms_output.put_line('included in all copies or substantial portions of the Software. ');  
   dbms_output.put_line(' ');  
   dbms_output.put_line('THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, ');  
   dbms_output.put_line('EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF ');  
   dbms_output.put_line('MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND ');  
   dbms_output.put_line('NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE ');  
   dbms_output.put_line('LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION ');  
   dbms_output.put_line('OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION ');  
   dbms_output.put_line('WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. ');  
end;  

DROP PROCEDURE add_job_history

DROP PROCEDURE secure_dml

DROP VIEW emp_details_view

DROP SEQUENCE departments_seq

DROP SEQUENCE employees_seq

DROP SEQUENCE locations_seq

DROP TABLE regions CASCADE CONSTRAINTS

DROP TABLE departments CASCADE CONSTRAINTS

DROP TABLE locations CASCADE CONSTRAINTS

DROP TABLE jobs CASCADE CONSTRAINTS

DROP TABLE job_history CASCADE CONSTRAINTS

DROP TABLE employees CASCADE CONSTRAINTS

DROP TABLE countries CASCADE CONSTRAINTS