4) Write a query to show the average quantity ordered for each product (Hint: Join OrderDetails and Products Tables)

W3SCHOOLS SQL is located at http://www.w3schools.com/sql/default.asp (Preferred browser is Chrome). On this page you will find a button called Try it yourself. Click on that button. You will be redirected to a page where you see a list of tables on the right side of the page. It is highly recommended to click Restore Database button on this page during every session. The page contains a box where you can type in an SQL statement involving the listed tables. You type in your SQL statement in that box and click on Run SQL button. The results will be displayed if your SQL statement is syntactically correct.