Normally when we develop an application with a RAD style, we merely look for a very planned DB design. But when the application development has been finished now you may need to look @ your ERD. Pl SQL Developer has a very good feature to reverse engineering the ERD. It is very simple to use




Just select the new diagram window. Now select the the tables you want to put in your ERD, then just drag them onto the digram space. You will get the view with all of your tables relation and key constrains. Most interesting is this you can do about all sorts of DB operation from this diagram. Just click right to get more information.