Question & Answer: You are developing a software system for credit card company. It is very important to make sure "when customer u…..

Answer) The pre conditions for the software may include :

• The customer should have an activated credit card with a limit set to it
• The customer should have all the things like mobile number and mail id verified
• The customer should have his/her PAN card details verified as well
• The customer should have a unique card number
• An OTP must be sent to registered number whenever a transaction is done to verify the transaction
• The software must have the details about every customer’s balance
• The last date and interest rates should be predefined

The Post conditions for the software may include :

• The customer can not do a purchase of more than the limit decided on the card
• The customer’s transaction is always confirmed after writing down the otp received on registered mobile number
• The customer is provided with the details of his transaction through mail/sms as soon as the transaction is done
• The software must update the amount used by the credit card owner as soon as any purchase is made and keep a track of the limit provided on to it
• The software is required to send the alert messages regarding the last date of paying the bills due on credit card before the due date