database:spider tables used: signup and notes signup table used to store details of clients notes tables used to store class notes.
signup.php is the signup and login page to which you are rerouted if you are not logged in. login.php checks if your email and password match the ones in database. backend.php is the webpage which shows the list of class notes. notes.php can only be accessed by the admin where new notes are wriiten. 2.php creates the database. 3.php creates the required tables.