Write z schemas defining state of atm operation system

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Bank teller machines rely on using information on the user s card giving the bank identifier, the account number and the user's personal identifier. They also derive account information from a central database and update that database on completion of a transaction. Using your knowledge of ATM operation, write Z schemas defining the state of the system, card validation (where the user's identifier is checked) and cash withdrawal.

Reference no: EM1359645

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