So the detail is I am developing bookshop system, so I have two tables that have relation with my project. First one is table book which has price attribute, same goes with table stationary and it has
I know there\'s a similar post but following it I couldn\'t solve the problem. I have a main class \'User\', a subclass \'Admin\' that inherits the methods from \'User\'. Then I have a class \'Privile
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