Tui dung Rational Rose phan tich bai cua tui , co 15 chuc nang cap nhat ( gom xem, them,xoa,sua) ---> 60 tien trinh --> bieu dien nhieu , dai va lon qua --> in ra giay ton tien nhieu qua . Vay co nen de nguyen 15 chuc nang = 15 tien trinh cho gon , hay bat buoc phai bieu dien 15 chuc nang = 60 tien trinh.Ai biet xin chi gium.
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