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An Automatic Teller machine (ATM) is an Electronic Device that provides services like balance inquiry, cash withdraw and money transfer etc. The ATM system is considered an example of a safety critical system and hence the need to formalize its services. To formalize the ATM system we need to first declare variables to be used. - An ATM card contains the following information CARD := cardNo | accountNo | erpiryDate - After any transaction the ATM machine gives the following responses ATMRESPONSE := operationSuccessfull | operation Failed An ATM can be in two states

An Automatic Teller machine (ATM) is an Electronic Device that provides services like balance inquiry, cash withdraw and money transfer etc. The ATM system is considered an example of a safety critical system and hence the need to formalize its services. To formalize the ATM system we need to first declare variables to be used. - An ATM card contains the following information CARD := cardNo | accountNo | erpiryDate - After any transaction the ATM machine gives the following responses ATMRESPONSE := operationSuccessfull | operation Failed An ATM can be in two states

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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An Automatic Teller machine (ATM) an Electronic Device that provides services like balance inquiry, cash withdraw and money transfer etc. The ATM system is considered an example of a safety critical system and hence the need to formalize its services. To formalize the ATM system we need to first declare variables to be used. - An ATM card contains the following information CARD := cardNo | accountNo | expiryDate - After any transaction the ATM machine gives the following responses ATMRESPONSE := operationSuccessfull | operation Failed - An ATM can be in two states STATE := available | busy - For any withdraw operation the ATM machine has restrictions on the minimum and maximum amount one can withdraw. АMOUNT :3 minimumAmount | maximumАтоunt - The other important variable is the date DATE := issueDate | expiryDate | todayDate - The ATM generates the following possible error messages ERROR := invalidCard | invalidPin | invalidAmount | insufficientBalance - Below is a schema for a Bank Account .Ассоunt ассоuntName :PNAME accountNo : PNUMBER balance : NUMBER + N Has : ΝΑ ΜΕ ΝUMB ER dom Has — aссоuntName balance (NUMBER) > 0 Use the information provided above to develop schema that describe the following ATM operations. (a) Card reading (b) Balance inquiry (c) Withdraw (d) Money transfer from one account to the other
Transcribed Image Text:An Automatic Teller machine (ATM) an Electronic Device that provides services like balance inquiry, cash withdraw and money transfer etc. The ATM system is considered an example of a safety critical system and hence the need to formalize its services. To formalize the ATM system we need to first declare variables to be used. - An ATM card contains the following information CARD := cardNo | accountNo | expiryDate - After any transaction the ATM machine gives the following responses ATMRESPONSE := operationSuccessfull | operation Failed - An ATM can be in two states STATE := available | busy - For any withdraw operation the ATM machine has restrictions on the minimum and maximum amount one can withdraw. АMOUNT :3 minimumAmount | maximumАтоunt - The other important variable is the date DATE := issueDate | expiryDate | todayDate - The ATM generates the following possible error messages ERROR := invalidCard | invalidPin | invalidAmount | insufficientBalance - Below is a schema for a Bank Account .Ассоunt ассоuntName :PNAME accountNo : PNUMBER balance : NUMBER + N Has : ΝΑ ΜΕ ΝUMB ER dom Has — aссоuntName balance (NUMBER) > 0 Use the information provided above to develop schema that describe the following ATM operations. (a) Card reading (b) Balance inquiry (c) Withdraw (d) Money transfer from one account to the other
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