Format	Submit one executable plain text source file, and one output file. Run source will generate output as submitted.


Statement 1	Display all information about all courses
Statement 2	Add a new course "Relational Database Systems" with course number 651. Use your user name as created_by/modified_by and current date as created_date/modified_date
Statement 3	List the course number for "Database System Principles"
Statement 4	Set "Database System Principles" as the prerequisite for "Relational Database Systems"
Statement 5	List all courses that have "Database System Principles" as prerequisite
Statement 6	List total number of courses that have no prerequisite
Statement 7	Delete course "Relational Database Systems"
Statement 8 	Display total number of courses
Statement 9	Lower cost of all courses by 100
Statement 10	List all course cost (show course description and cost only) by the order of cost from highest to lowest