ATM_Design.pdf atm design

7/29/2019 ATM_Design.pdf atm design

1/40

ATM System use case model

ATMCustomer

Withdraw

Funds

Query

Account

TransferFunds

Add Cash

Startup

ShutdownOperator

Validate

PIN

include

include

include


2/40

Conceptual static model

for ATM System - Problem Domain

ReceiptPrinterCashDispenserCardReaderATMCustomer

ATM

ATMCashATMCard

DispensesReads

1 1

ATMBankHas 1..*

Receipt

Prints

1

1

Maintains

1 1 1

1 1

1 1 1 1

Operator


3/40

ATM System context diagram

system

Banking

System

external user

Operatorexternal user

ATMCustomer

CashDispenser

external output

device

ReceiptPrinter

external output

device

external I/O

device

CardReader

1

1

1

1

1

1..*

1..*

1..*

1..*

1

1

ATMCustomer

Operator

1..*1

1

1

1

1

Inputs

To

Outputs

To

Interacts

With

Outputs

To

InteractsWith

Outputs

To


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Conceptual static model

for ATM System - entity classes

entity

Savings

Account

entity

Checking

Account

entity

Customer

entity

Bank

entity

DebitCard

entity

ATMTransaction

entity

TransferTransaction

entity

QueryTransaction

entity

WithdrawalTransaction

Modifies

Owns

Manages

entity

Account

Has

entity

CardAccount

1..*

1..*

0..11..*

*

1..*

* 1..*

entity

PINValidationTransaction

11

entity

ATMInfo

Owns

Identifies

1

*

Maintains

1,2

Provides

Access to

1 1..*


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entity

Bank

bankName: String

bankAddress: String

entity

Customer

customerName: String

customerId: String

customerAddress: String

entity

DebitCard

cardId: String

PIN: StringstartDate: Date

expirationDate: Date

status:Integer

limit: Real

total: Real

entity

Account

accountNumber: String

balance: Real

entity

CheckingAccount

lastDepositAmount: Real

entity

SavingsAccount

interest: Real

Conceptual static model for ATM System


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entity


startDate: Date


entity

ATMTransaction

transactionId: String

cardId: StringPIN: String

date: Date

time: Time

status: Integer

entity



amount: Real

balance: Real

entity

QueryTransaction


balance: Real

lastDepositAmount: Real

entity

TransferTransaction

fromAccountNumber: String

toAccountNumber: String

amount: Real



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entity

CardAccount

cardId: StringaccountNumber: String

entity

ATMInfo

ATMId: StringATMLocation: String

ATMAddress: String


entity

ATMCash

cashAvailable: Integer

fives: Integer

tens: Integer

twenties: Integer

entity

ATMCard

cardId: String

startDate: Date



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system

BankingSystem

subsystemATMClient

Subsystem

subsystemBankServer

Subsystem

1..* 1

external user

ATMCustomer

external user

Operator

external output

deviceReceiptPrinter

external input/ output

device

CardReader

external output

device

CashDispenser

1

1

1

1

1

11

1

1

1

ATM System - major subsystems


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ATM Subsystem Packaging of Use Cases

Server

Withdraw

Funds

Server

Query

Account

Server

Transfer

Funds

Server

Validate PIN

subsystem

ATMServerSubsystem

Client

Withdraw

Funds

Client

Query

Account

Client

Transfer

Funds

Client

Validate PIN

subsystem

ATMClientSubsystem

include

include

include

include

include

include

include

Add Cash

Startup

Shutdown

ATM S t t l l d i t f l


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system

BankingSystem

external user

Operator

external user

ATMCustomer

CashDispenser

external output

device

ReceiptPrinter

external output

device

external input/ output

device

CardReader

input/output device

interface

CardReader

Interface

ReceiptPrinter

Interface

output device

interface

user interface

CustomerInterface

CashDispenser

Interface

output device

interface

user interface

OperatorInterface

1

1

1

1

1

1 1

1 1

1

1 1

1

1 1

1

1

ATMCustomer

Operator

ATM System external classes and interface classes


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subsystem

ATMClient

Subsystem

user interface

OperatorInterface

user interface

CustomerInterface

CashDispenser

Interface

output device

interface

ReceiptPrinter

Interface

output deviceinterface

I/O device interface

CardReaderInterface

state dependent

control

ATMControl

entity

ATMTransaction

entity

ATMCard

entity

ATMCash

ATM Client subsystem classes


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Collaboration diagram:

ATM Client - Validate PIN use case

:CardReaderInterface

2.1: Card Request2.2: CardData

1.4: Pin Prompt

2: PIN Input

2.5: Validate PIN

(Customer Info)2.6 [Valid]:

Valid PIN

1: Card

Reader

Input

1.1: Card

Input Data

2.3: Customer Info

1.2: Card Inserted

2.4: PIN Entered

(Customer Info)

1.3: Get PIN

:ATMCard

:CustomerInterface :ATMTransaction

:ATMControl

2.7: Display

Menu

2.8: Selection Menu

2.7a: Update

Status

I/O device

interface

external I/O

device

:CardReader

entity

user interfaceentity

state dependent

control

subsystem

:BankServer

:ATMCustomer

Sequence diagram for Validate PIN use case


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1.2 : Card Inserted

1.1: Card

Input Data

1.4: PIN Prompt

2: PIN Input

2.1: Card Request

2.2: Card Data

2.3: Customer Info2.4: PIN

Entered

2.5: Validate PIN

2.6[Valid]: Valid PIN

2.7: Display Menu

2.8: Selection Menu

1.3: Get PIN

1: CardReader Input

2.7a: Update Status

I/O device interface


entity

:ATMCardSubsystem

:BankServer

state dependent

control

:ATMControl

:ATM

Customer

Sequence diagram for Validate PIN use case

user interface

:CustomerInterface

entity

:ATM

Transaction


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Waiting

for PIN

Validating PIN

Waiting for

Customer Choice

1.2: Card Inserted /1.3: Get PIN

2.6: Valid PIN /

2.7: Display Menu,

2.7a: Update Status

2.4: PIN Entered /

2.5: Validate PIN

IdleEntry/ Display

Welcome

Statechart for ATM Control - Validate PIN use case


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Collaboration diagram

ATM Server - Validate PIN use case

: PINValidation

TransactionManager

: DebitCard : CardAccount

PIN

Validation

Response (Status)

V1: PIN

Validation

Request(Card Id, PIN)

V2:

Validate

(Card Id, PIN)

V3:

Card

Data V4:

Read(Card Id)

V5:

Account

Numbers

V6:

subsystem

: ATMClient

business logic

entity entity


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Sequence diagram - ATM Client Withdraw Funds use case


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3.3: Withdrawal Selected

3.4: Request Withdrawal

3.6: Dispense Cash

3.7: Cash Withdrawal Amount

3.9: Dispenser Output

3.10: Cash Dispensed

3.11: Print Receipt

3.12: Transaction RequestTransaction Data

Printer Output

Receipt PrintedEject

3.18: Card Ejected

Card Reader Output

3.8: Cash Response

3.19: Display Ejected

3.13:

3.14:

3.15:3.16:3.17:

3.4a: Display Wait

3.11a: Display Cash Dispensed

3.4a.1: Wait Prompt

3.11a.1: Cash Dispensed Prompt

3.20: Card Ejected Prompt

Transaction Details3.2:

3.6 a:

3.5: Withdrawal OK

Update Status

3.11b: ACK Cash Dispensed

q g

3.1: Customer Selection3: Selection Input

I/Odi


odi

:Cash

Dispenser

Interface

entity

:ATMCash

odi

:Receipt

Printer

Interface

subsystem

:BankServer

sdc

:ATMControl

user interface

:CustomerInterface

entity

:ATM

Transaction

:ATM

Customer


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Dispensing

Printing

Ejecting

Terminating

3.18: Card Ejected /


3.5: Withdrawal Ok /

3.6: Dispense Cash,

3.6a: Update Status

3.10: Cash Dispensed /

3.11: Print Receipt,



3.15: Receipt Printed /

3.16: Eject

After (Elapsed Time) [Closedown not Requested]IdleEntry / Display

Welcome

Statechart for ATM Control - Withdraw Funds use case

Waiting For

Customer Choice

Processing

Withdrawal

3.3: Withdrawal Selected /3.4: Request Withdrawal,

3.4a: Display Wait


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Collaboration diagram

ATM Server - Withdraw Funds use case

W6: Update

Daily Total

(Card Id, Amount)

business logic

:WithdrawalTransaction

Manager

entity

:Account

entity

:DebitCard

entity

:TransactionLog

W1: Withdrawal Request

(Transaction Details)

W4: Debit(Account #,Amount)

W5: Account

Data

W7: Log TransactionW3:

Daily Limit

Response

W8: Withdrawal

Response (Cash Details)

W2: CheckDaily Limit

(Card Id,Amount)

subsystem

:ATMClient


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Processing

Transaction

Terminating

Transaction

3.3: Withdrawal Selected /3.4: Request Withdrawal,

3.4a: Display Wait

Transfer Selected /

Request Transfer,

Display Wait

Query Selected /

Request Query,

Display Wait

Transfer Ok /Print Receipt, Update Status

Query Ok / Print Receipt, Update Status


3.6: Dispense Cash,

3.6a Update Status

Rejected /

Eject,

Display Apology

Cancel / Eject, Display Cancel

Third Invalid, Stolen / Confiscate,Update Status

1.2: Card Inserted /

1.3: Get PIN IdleEntry / Display

WelcomeAfter(Elapsed Time)[Closedown not Requested]

Closed DownEntry / Display

System Down

StartupClosedown

After(Elapsed Time) [Closedown Requested]

Insufficient Cash /Eject

Top level statechart for ATM Control

Processing

Customer

Input


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Waiting

for PIN

Validating PIN

Waiting for

Customer Choice

1.2: Card Inserted /1.3: Get PIN

Cancel / Eject,

Display Cancel

Invalid PIN /

Invalid PIN Prompt,

Update Status

2.6: Valid PIN /

2.7: Display Menu,

2.7a: Update Status

2.4: PIN Entered /

2.5: Validate PIN

Third Invalid, Stolen / Confiscate,

Update Status

Transfer Selected / Request Transfer,

Display Wait

3.3: Withdrawal Selected /

3.4: Request Withdrawal,

3.4a: Display Wait

Query Selected /

Request Query,

Display Wait

IdleEntry/ Display

Welcome

Statechart for ATM Control -

Processing Customer Input superstate

Processing Customer

Input


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Statechart for ATM Control - Terminating Transaction superstate


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Confiscating

Dispensing

Printing

Ejecting

Terminating

3.18: Card Ejected /


Rejected / Eject, Display Apology


3.6: Dispense Cash,

3.6a: Update Status

Query Ok /

Print Receipt,

Update Status

Transfer Ok /Print Receipt,

Update Status 3.10: Cash Dispensed /

3.11: Print Receipt,



3.15: Receipt Printed /

3.16: Eject

Card Confiscated /

Display Confiscated

After(Elapsed Time)[Closedown not Requested]

Third Invalid, Stolen / Confiscate

Cancel / Eject, Display Cancel

Insufficient Cash /

Eject

After(Elapsed Time)[Closedown Requested]

IdleEntry / Display

Welcome

Closed DownEntry / Display

System Down

Terminating Transaction

Statechart for ATM Control - Terminating Transaction superstate


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user interface

Customer

Interface

device interface

CardReader

Interface

device interface

CashDispenser

Interface

device interface

ReceiptPrinter

Interface

entity

ATM

Cash

entity

ATM Card

entity

ATM

Transaction

entity

TransferTransaction

entity

QueryTransaction

entity


entity


Reads Updates Notifies Controls Dispenses

state

dependent

control

ATMControlReplenishes

Notifies

ReadsCreates

Controls

Startup,

Close user interface

Operator

Interface

Refined static model -

ATM Client subsystem

Updates

Consolidated collaboration diagram for Bank Server subsystem


26/40

coordinator

:Bank

TransactionServer

business logic

:PINValidation

TransactionManager

business logic

:Query

Transaction

Manager

business logic

:TransferTransactionManager

entity

:CheckingAccount

entity

:DebitCard

ATM

Transactions

Bank

Responses

Transfer

ResponseTransfer

Transaction

QueryTransaction

QueryResponse

Withdraw

Response

Withdraw,Confirm,

Abort

PIN Validation

Request

PIN Validation

Response

Card

Data

Validate

Account

Data

Account

Data

business logic

:WithdrawalTransactionManager

entity

:SavingsAccount

Read

AccountData

entity

:TransactionLog

Daily

Limit

Response

Check,

Update

Log

Log

Log

Debit,

Credit,Read

entity

:CardAccount

Read

Account

Numbers

Account

Data

ReadAccount

Data

Account

Data

subsystem

:ATMClient

server subsystem

:BankServer

Debit,

Credit,

Read

Debit,

Credit,

Read

Debit,

Credit,Read

Subsystem design high level collaboration diagram


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Subsystem design - high level collaboration diagram

for ATM System

client

subsystem

:ATMClient

server

subsystem

:BankServer

ATM Transactions

display

Information

printer

Output

dispenser

Output

cardReader

InputcardReader

Output

customerInput

Bank Responses

operator

Input operatorInformation

external I/O device:CardReader

external output device

: CashDispenser


: ReceiptPrinter

system

:BankingSystem

:ATMCustomer

:Operator

Subsystem interfaces high level concurrent collaboration diagram


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Subsystem interfaces - high level concurrent collaboration diagram

for ATM System

ATMTransaction

display

Information

printer

Output

dispenser

Output

cardReader

InputcardReader

Output

customerInput

bankResponse

operator

Input operatorInformation

external I/O device

:CardReader

system:BankingSystem

client

subsystem

:ATMClient

server

subsystem

:BankServer


: CashDispenser


: ReceiptPrinter

:ATMCustomer

:Operator

b t

Task Architecture - initial concurrent collaboration diagram for ATM Client subsystem


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asynchronous

I/O device

interface

:CardReader

Interface

user interface

:CustomerInterface

control

clustering

:ATMController

user interface

:Operator

Interface

data

abstraction

:ATM

Transaction

Customer

Input

ATM

Transaction

bankResponse

Card

Reader

Output

Customer Info. ,

Customer Selection

Cash

Response

Cash

Withdrawal

Amount

Card Inserted , Card Ejected,

Card Confiscated

Eject,

Confiscate

Dispenser

Output

Printer

Output

Transaction details

Update

Transaction Status

(Cash Details),

Update PIN Status,Transaction Request

Transaction

Data

Customer events

(Transaction details)

Display

Information

DisplayPrompts

data

abstraction

:ATMCard

Card

Reader

Input

Card

Input

Data

Card

Request

Card

Data

data abstraction

:ATMCash

Cash

AddedStart Up,Closedown

Operator

Input

Operator

Information

subsystem

:BankServer

:Operator

:ATMCustomer

passive output

device

:ReceiptPrinter

passive output

device

:CashDispenser

client subsystem:ATMClient

asynchronous

I/O device

:CardReader

subsystem

Task Architecture - revised concurrent collaboration diagram for ATM Client subsystem


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asynchronous

I/O device

interface

:CardReader

Interface

user interface

:CustomerInterface

control

clustering

:ATMController

user interface

:Operator

Interface

data

abstraction

:ATMTransaction

Customer

Input

ATM

Transaction

bank

Response

card

Reader

Output

updateCustomerInfo

(cardData, PIN) ,

updateCustomerSelection

(in selection, out

transactionDetails)

withdrawCash

(in cashAmount,

out fivesToDispense,

out tensToDispense,

out twentiesToDispense)

cardInserted , cardEjected,

cardConfiscated

eject,

confiscate

dispenser

Output

printer

Output

update

TransactionStatus

(cashDetails),

updatePINStatus

(status),read (out transaction

Data)

customerEvent(transactionDetails)

Display

Information

displayPrompts

data

abstraction

:ATMCard

card

Reader

Input

write

(card

Data)

read (out

Card

Data)

data abstraction

:ATMCash

addCash

(in fivesAdded,in tensAdded,

in twentiesAdded)startUp,

closedownoperator

Input

operator

Information

subsystem

:BankServer

:Operator

:ATMCustomer

passive output

device:ReceiptPrinter

passive output

device

:CashDispenser

client subsystem

:ATMClient

asynchronous

I/O device

:CardReader

ATMClient information hiding classes


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data abstraction

ATMCard

- cardNumber : String

- startDate : Date

- expirationDate : Date

+ write (in cardData)

+ read (out cardData)

data abstraction

ATMCash

- cashAvailable : Integer = 0

- fives : Integer = 0

- tens : Integer = 0

- twenties : Integer = 0

+ addCash (in fivesAdded, in tensAdded,in twentiesAdded)

+ withdrawCash (in cashAmount,

out fivesToDispense,

out tensToDispense,

out twentiesToDispense)

data abstraction

ATMTransaction

device interface

CashDispenserInterface

+ initialize ( )

+ dispenseCash (in cashAmount,

out dispenseStatus)

device interface

ReceiptPrinterInterface

+ initialize ( )

+ printReceipt (in receiptInfo,

outprinterStatus)

state dependent control

ATMControl

+ processEvent (in event, out action)+ currentState ( ) : State

+ updateCustomerInfo (cardData, PIN)

+ updateCustomerSelection (in selection,

out transactionDetails)

+ updatePINStatus (status)

+ updateTransactionStatus (cashDetails)

+ read(out transaction Data)

- transactionId: String- cardId: String

- PIN: String = null

- selection: TransactionType

- transactionData:TransactionRecord

Design of ATM Controller connectors


32/40

g

connector

ATMControl

MessageQ

control

clustering

: ATMController

connectorbankServerProxyconnector

cardReader

MessageBuffer

asynchronous I/O

device interface

: CardReader

Interface

user interface

: OperatorInterface

user interface

: CustomerInterfaceconnector

promptMessage

Queue

receive (out cardreaderMsg)

send (in ATMControlRequest)



receive (out displayPrompt)

send (in

displayPrompt)

receive(out ATMControlRequest)

send

(in cardReaderMsg)

send (in ATMTransaction,

outbankResponse)


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output device

interface

:ReceiptPrinter

Interface

output device

interface:CashDispenser

Interface

coordinator

:ATM

Coordinator

printReceipt (in

receiptInfo, out

printStatus)

receive

(out ATMControlRequest)

dispenseCash (in

cashAmount, out

dispenseStatus)

control clustering:ATMController

state dependent

control

:ATMControl

processEvent (in event,

out action)

printerOutput

dispenserOutput

Detailed Software Design of ATM Controller

send(in ATMTransaction,

outbankResponse)

send(in displayPrompt)

send (in cardReaderMsg)

updateTransactionStatus

(cashDetails),

updatePINStatus (status)

read (out transaction

Data)

coordinator

BankTransaction


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business logic

TransferTransaction

Manager

business logic

QueryTransaction

Manager

business logic


Manager

business logic


Manager

entity

TransactionLog

entity

Checking

Account

entity

Savings

Account

entity

Debit Card

entity

Card

Account

entity

Account

entity

Customer

entity

Bank

entityATMInfo

Delegates

toDelegates

toDelegates

to

Delegates

to

Logs

Credits,Debits,Reads

Checks,

Updates

Validates

Queries

Owns Has

Owns Manages

LogsLogs

Reads

Reads

MaintainsRefined static model -

Bank Server subsystem

BankTransaction

Server

Credits,Debits,Reads

Credits,Debits,Reads Credits,

Debits,Reads

Concurrent collaboration diagram

f S

ATMTransaction

subsystem

:ATMClient


35/40

for Bank Server subsystem

coordinator

:BankTransactionServer

business logic

:PINValidationTransactionManager

business logic

:QueryTransactionManager

business logic


database

wrapper

:Checking

Account

databasewrapper

:DebitCard

bankResponse

Transfer

Response

Transfer

Transaction

Query

TransactionQuery

Response

Withdraw

Response

Withdraw,

Confirm,

Abort

PIN Validation

Request

PIN Validation

Response

Card

Data

ValidateAccount

Data

Account

Data

business logic


database

wrapper

:Savings

Account

Read

Account

Data

databasewrapper

:TransactionLog

Daily

Limit

Response

Check,

Update

Log

Log

Log

Debit,

Credit,

Read

database

wrapper

:CardAccount

Read

Account

Numbers

Account

Data

Read

Account

Data

Account

Data

:ATMClient

server subsystem

:BankServer

Debit,

Credit,Read

Debit,

Credit,

Read

Debit,

Credit,

Read

Bank Server information hiding classes


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business logic

WithdrawalTransactionManager

+ initialize ( )

+ withdraw (in accountNumber,

in amount, out w_response)

+ confirm (accountNumber, amount)+ abort (accountNumber, amount)

business logic

PINValidationTransactionManager

+ initialize ( )

+ validatePIN (in cardId, in PIN,

out v_response)

business logic

TransferTransactionManager

+ initialize ( )

+ transfer (

in fromAccountNumber,

in toAccountNumber,

in amount, out t_response)

business logic

QueryTransactionManager

+ initialize ( )

+ query (in accountNumber,

out q_response)

database wrapperTransactionLog

+ read (out transaction )

+ log (in transaction )



37/40

g

database wrapper

CardAccount

+ read ( in cardId, out accountNumber)

+ update (in cardId, in accountNumber)

database wrapperDebitCard

+ create (cardId)

+ validate (cardId, PIN)

+ updatePIN (cardId, PIN)

+ checkDailyLimit (cardId, amount)

+ updateDailyTotal (cardId, amount)

+ updateExpirationDate (cardId, expirationDate)

+ updateCardStatus (cardId, status)

+ updateDailyLimit (cardId, newLimit)

+ clearTotal (cardId)

+ read (in cardId, out PIN, out expirationDate,

out status, out limit, out total)+ delete (cardId)


d t b


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database wrapper

Account

+ readBalance (accountNumber): Real

+ credit (accountNumber, amount)

+ debit (accountNumber, amount)

+ open (accountNumber)+ close (accountNumber)

+ readLastDepositAmount

(accountNumber) : Real

+ addInterest (accountNumber, interestRate)

+ readCumulativeInterest (accountNumber) : Real

database wrapper

CheckingAccount

database wrapper

SavingsAccount

ATM

Transactionsubsystem

:ATMClient

Concurrent collaboration diagram

for Bank Server subsystem architecture


39/40

coordinator

:BankTransaction

Server

business logic

:PINValidationTransactionManager

business logic

:QueryTransactionManager

business logic


database

wrapper:Checking

Account

databasewrapper

:DebitCard

bankResponse

transfer (in fromAccount#,

in toAccount#, in amount,out t_response)

query (in account#,

out q_response) withdraw (in account#,in amount, out w_response),

confirm (account#, amount),

abort (account#, amount)

validatePIN (in cardId, in PIN,

out v_response)

validate

(cardId, PIN)

business logic


database

wrapper:Savings

Account

databasewrapper

:TransactionLog

checkDailyLimit

(cardId, amount),

updateDailyTotal

(cardId, amount)

debit (account#,

amount),

credit (account#,

amount),

readBalance

log (in

transaction)

log (in

transaction)log (in

transaction)

debit (account#, amount),

credit (account#, amount),

readBalance

database

wrapper:CardAccount

read (in cardId,

out account#)

readBalance,

readLastDepositAmount

server subsystem

:BankServer

for Bank Server subsystem- architecture

readBalance,

readCumulativeInterest



readBalance



readBalance

Deployment diagram for Banking System


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Deployment diagram for Banking System

:ATMClient{1 node per ATM}

:BankServer{1 node}

wide area network

Documents

ATM_Design.pdf atm design