2. Discover ambiguities or omissions in the following statement of requirements for part of a ticket-issuing system: An automated ticket-issuing system sells rail tickets. Users select their destination and input a credit card and a personal identification number. The rail ticket is issued and them credit card account charged. When the user presses the start button, a menu display of potential destinations are activated, along with a message to the user to select a destination. Once a destination has been selected, users are requested to input their credit card. Its validity is checked and the user is then requested to input a personal identifier. When the credit transaction has been validated; the ticket is issued.
2. Discover ambiguities or omissions in the following statement of requirements for part of
a ticket-issuing system:
An automated ticket-issuing system sells rail tickets. Users select their destination and
input a credit card and a personal identification number. The rail ticket is issued and them
credit card account charged. When the user presses the start button, a menu display of
potential destinations are activated, along with a message to the user to select a destination.
Once a destination has been selected, users are requested to input their credit card. Its
validity is checked and the user is then requested to input a personal identifier. When the
credit transaction has been validated; the ticket is issued.
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