If you use a credit card before, you will know that you make payments with it then you pay later. As for debit card, you need to pay first or put money in the card, then deduct money from the card as you spend it.
Direct debit is a concept so technically not need to represent it in UML, unless you need a "debit card" class.
K. Tsang OCPJP7 OCMJEA6
posted 4 months ago
Hi K Tsang.....
You made my day. My assumption is validated with the given thread.
Thanks for quick reply