Quality is delighting customers
simple- no batch required
medium-1 batch required
complex-2 batches required
Ya Mr. Siva is right.. you can understand as if any testcase check more than one functionality that will called complex testcase like: when we made testcase on any invoice genration of any organization we have to check finance and stock section as, on generaion of invoice financial account will increase but the stock of item invoiced will decrease..