Software Engineering ProjectNovember 2011

Developer Team

Arnav Sameer 108/09Mangal Singh Purty 213/09

Sanjay Prakash Toppo 367/09Tanay Mishra 475/09

Pallab Sutradhar 521/09

Welcome To Cabot Bank

Introduction

Purpose:

This document describes the software requirements and specification (SRS) for an automated teller machine (ATM) network. The document is intended for the customer and the developer (designers, testers, maintainers).

The reader is assumed to have basic knowledge of banking accounts and account services. Knowledge

and understanding of Unified Modeling Language (UML) diagrams is also required.

Scope

The software supports a computerized banking network called ‘Bank24’. The network enables customers to complete simple bank account services via automated teller machines (ATMs) that may be located off premise and that need not be owned and operated by the customer’s bank. The ATM identifies a customer by a cash card and password. It collects information about a simple account transaction (e.g., deposit, withdrawal, transfer, bill payment), communicates the transaction information to the customer’s bank, and dispenses cash to the customer. The banks provide their own software for their own computers. The ‘Bank24’ software requires appropriate record keeping and security provisions. The software must handle concurrent accesses to the same account correctly.

Documentation Conventions Account: A single account at a bank against which transactions can

be applied. Accounts may be of various types with at least checking

and savings. A customer can hold more than one account. MaxDailyWD:

The maximum amount of cash that a customer can withdraw from an account in a day (from

00:00 AM to 23:59 PM) via ATMs. PIN: It Refers to Personal Identification Number. Used to identify

and validate the login of an ATM user.

Intended Audience The intended audience of this SRS consists of:

• Software designers

• Systems engineers

• Software developers

• Software testers

• Customers

Additional information The ATM network does not work independently. It

works together with the banks’ computers and the software run by the network’s banks.

The actors of the system are:

1. User2. ATM Machine3. Bank

General Description

ATM

ATM

ATM

ACCOUNT

ACCOUNT

ACCOUNT

ACCOUNT

BANK COMPUTER

Product Perspective The ATM network doesn’t work independently

It has to work together with the computer software owned by banks. There are clearly denied interfaces for the different system.

Product Functions The software should support a computerized banking network Each bank provides its own computer to maintain its own accounts and

process transactions against them Automatic teller machines communicate with the banks, computers An automatic teller machine accepts a cash card and interacts with the user communicates with the bank computer to carry out the transaction dispenses cash and prints receipts The system requires appropriate record keeping and security provisions The system must handle concurrent access to the same account

correctly The banks will provide their own software for their own computers The cost of the shared system will be apportioned to the banks

according to the number of customers with

User Characteristics There are several users of the ATM network Customer Figure: ATM network The customer interacts with the ATM network via the ATM It must be very easy for them to use the ATM They should be supported by the system in every possible

way Maintainer It should be easy to maintain the whole system The maintainer should be the only person that is allowed to connect a new ATM to the

network

Functional Requirement Insert atm card

Validate atm card

Enter product task

Enter pin

Validate pin

Validate for account type if the task is banking

Ask for amount to be withdrawn

Amount is debited if sufficient balance is available

Error message is displayed otherwise

Ask for printing advice if the task is balance enquiry

External Interface Requirements

ReceiptsCard Slot Cash Slot

0 1 2 3 4

5 6 7 8 9

ENTER

Product function1. Login

2. Get Balance Information

3. Withdraw Cash

4. Transfer Funds

Hardware Interface The ATM network has to provide hardware interfaces to various

printers and various ATM machines

Ability to read the ATM card

Ability to count the currency notes

Touch screen for convenience

Keypad (in case touchpad fails)

Continuous power supply

Ability to connect to bank’s network

Ability to take input from user

Ability to validate user

Non-Functional RequirementsPerformance Requirements :

Error message should be displayed at least 6 sec.

If there is no response from the bank computer after a request within minutes the card is rejected with an error message.

The ATM dispenses money if and only if the withdrawal from the account is processed and accepted by the bank.

Each bank may be processing transactions from several ATMs at the same time.

Security Requirements:

Users accessibility is censured in all the ways

Users are advised to change their PIN on first use

Users are advised not to tell their PIN to anyone

The maximum number of attempts to enter PIN will be three .

Software Interface The ATM network has to provide software interfaces to

the software used by di-erent banks

Different network software

The exact detailed specification of the software interfaces is not part of this document

Safety Requirements:

Must be safe kept in physical aspects, say in a cabin

Must be bolted to floor to prevent any kind of theft

Must have an emergency phone outside the cabin

There must be an emergency phone just outside the cabin

The cabin door must have an ATM card swipe slot

The cabin door will always be locked, which will open only when user swipes his/her ATM card in the slot & is validated as genuine

Attributes Availability

Security

Maintainability

Transferability Conversions

Data Bases

Assumptions

Hardware never fails

ATM casing is impenetrable

Limited number of transactions per day i.e. sufficient paper for receipts

Limited amount of money withdrawn per day i.e. sufficient money

Conclusion Owing to the above mentioned assumptions this ATM

Net Banking Software is working as fit to customer needs.

Result is verified accordingly.

Acknowledgement We would like to thank our teacher Mrs. Suprita Das

for helping us with the basic guidelines for the project