* for table positions, put the x,y co-ordinates
*
* @param string $do It tells what the Schema is supposed to do
* create and select a page, generate schema etc
*/
if (isset($_REQUEST['do'])) {
$user_schema->setAction($_REQUEST['do']);
$user_schema->processUserChoice();
}
/**
* Show some possibility to select a page for the export of relation schema
* Lists all pages created before and can select and edit from them
*/
$user_schema->selectPage();
/**
* Create a new page where relations will be drawn
*/
$user_schema->showCreatePageDialog($db);
/**
* After selection of page or creating a page
* It will show you the list of tables
* A dashboard will also be shown where you can position the tables
*/
$user_schema->showTableDashBoard();
