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Use case (Research Paper Sample)


Task: Use Case analysis The sample is about use case in the ATMs


Topic: Use Case
Question 1
The use case gives a description of how a customer of a given bank can use the ATM to make withdrawals from his or her bank account. In this case, there are two actors in the sector, that is, the bank and the customer. This leads to having some preconditions for the activity or transaction to take place. Firstly, the there is a connection to the bank that is active. In addition, the ATM should have cash loaded in it.
There are different situations that may take place in the event of the transaction occurring. The process is systematic and logical. Failure to follow the steps will lead to unsuccessful; transactions in the end. The use case starts at the point when the customer of a given bank inserts their card into the ATM. There is the validation of the user is performed automatically by the ATM after this previous event. This leads to the machine giving a display of the various tasks that it can perform or offer at this point. Many a time, at this point customers do select the tab command button "withdraw cash." Then the ATM gives a prompt for an account from which the customer would like to make drawings (World Bank. 2010). 
The next stage requires the customer to select the correct account depending on the number and type of accounts owned. Then the ATM prompts for an amount the customer wishes to withdraw. After entering the amount, all the documents of the customer are sent to the bank in the form of a transaction. These documents include the PIN; card ID, amount that one wants to withdraw and the account from which the person is making the drawings. Then automatically, there is a response via the machine whether the transaction is successful or not. If it goes through, the card comes out and money dispensed. The aftermath of these events leads to printing of the receipts and the use case comes to successful completion.
There are cases however when a transaction may become unsuccessful. This is possible depending on how the customer feeds figures and data into the machine, for instance, at the point of validation of user. If the validation fails, then the use case ends with a total failure status. If the customer enters the wrong account number, the ATM shall display a message indicating that the account entered is invalid. Then the use case can resume from a later stage when prompted to do so (World Bank. 2010). 
Instances arise when the user accidentally enters the wrong withdrawal amount into the machine. This may be either too little amount that the machine cannot process since it is set to work in that like that, or too large figures. Such amounts make unsuccessful transactions for various reasons as read in the terms and conditions of the banking service providers. This includes for instance, amounts exceeding withdrawal limits required per transaction, or the daily withdrawal limits.. There may also exist a case in which the customer’s account has insufficient funds. All the cases outlined make the machine issue a warning message and indicate the amount one is capable of withdrawing. Therefore, the customer is goes a step backwards from where they can resume to complete the transaction (Bruegge, & Dutoit, 2010). 
There are moments when the customer receives no response from the bank. In this case, the ATM will retry a number of times, even up to three times. If this continues and still the machine does not elicit any response, the machine may display a message indicating unavailability of network or failure. At this point, the ATM automatically returns the card and indicates closure for the moment. Therefore, the use case ends with a condition of failure (King, 2012).
lefttop1.0 Use case model1.2. Possible scenarios
1.3 Cash withdrawal model
Question 2 .
In this use case, during the use of the ATM to perform the transactions, one follows the similar steps followed in question 1. Therefore, the only things that change are the fact that it is cash depositing instead of making drawings. Therefore, a similar process is followed, but this time round, it involves changing the details to read deposit instead of withdraw.
The cash deposits via the ATM are possible only if the account to which the deposit is occurring has a link to the card. Cash or a cheque in an envelope is efficient while carrying out the transaction. The customer enters the amount of deposit into the ATM. The money is always subject to verification by an operator before approval by a physical operator. Therefore, the envelope is only acceptable after approval form the bank. In order to carry out this transaction, one has to follow several different steps.
To begin with, the user inserts the card into the ATM. Then one enters the personal identification number. From the transactions menu, one chooses deposit and selects amount and the form of money. Either the form can be in cash or cheque depending on which suits the user. After that, the sealed money placed in an envelope and inserted into the machine. There are options a person can choose from, depending on whether one is depositing though cash or cheque into the machine (Bruegge, & Dutoit, 2010). 
By the end of the exercise, the customer waits and receives the printed transaction ID on the envelope. This directs the user to send a deferred transaction and then prints the receipt. This receipt is a record that one can use as a proof of transaction. Thereafter, the user ejects the card and leaves the premises or bank. The following day, operators of the bank open the security box and count the money in the envelope. The commitment of the transactions follows this aspect (Bruegge, & Dutoit, 2010). 
Whenever wrong information or details input into the ATM, the transactions take a different course, and in any case, they may become unsuccessful. This applies when a person inputs the wrong PIN. Other instances that may terminate the transaction include when a person does not insert the envelope or inserts two or more envelopes in the machine. In addition, the transaction may fail if no money is in the envelope even when there is too much money in the envelope. The exception of the envelope missing is also a guarantee to having an incomplete transaction (King, 2012).
Question 3
Just like the other user cases, the process of making an account transfer follows some steps. However, for the transactions to work, the card a person is transferring to must have a link with the one that he is using. The customer inserts the debit or credit card into the ATM and enters the pin. One then selects the amount o...
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