Final_design

Final_design - Software Design Group 4 Jason Wong Justin...

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Software Design Group 4 Jason Wong Justin Kaplan Atul Sharma Dhaval Patel Danny Dang
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I. Scope A. System Objectives-what is system to do: The system to design is the ATM software system. The objective of the system is to provide an efficient and reliable method of banking for the bank customer. Its major functions shall be but not limited to Log In, Deposit, Withdraw, and Log Out. B. Major software requirements: Windows Personal Computer C++ Compiler – GNU compiler collection. C. Design constraints, limitations: System shall be designed and tested to function on Windows Personal Computer only. II. Data Design A. Data objects and resultant data structures: The file “Banking Account File” contains all the information about the bank customer. All data in the Banking Account file is character (ASCII) format. This file is made read-only to protect its data, but can be updated using the “BANKINGn.TXT” file. The “BANKINGn.TXT” is a record file that shall be used to update a particular field in the Banking Accounts File. The “BANKING4.TXT” is the temporary file that shall be used to store the temporary updates to records during the customer banking session before actually making modi- fications to the Banking Accounts File. B. File and database structures 1. External files structures:
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There shall be three external text files to be used: I. Banking Accounts File II. BANKINGn.TXT III. BANKING4.TXT a. Logical structures-sequential, random, indexed? All the data shall be stored in the file in a sequential structure. b. Logical record description: Banking Accounts File: All data in the Banking Account file is character (ASCII) format. The file is made read-only for protection and its fields can only be updated us- ing the record file. The format of the data stored in the file is specified in the Interface Requirement Specification Document ( http://bingweb.binghamton.edu/~intrieri/bankacct.htm ). The “BANKINGn.TXT” is a record file that shall be used to update a particular field in the Banking Accounts File. The format of the record file can be found in the Inter- face Requirement Specification Document ( http://bingweb.binghamton.edu/~intrieri/bankacct.htm ). “BANKING4.TXT” is temporary file used to store temporary updates of records of the session. The file shall contain the account number, pin and latest account balance. c. Access method? All the data are stored in the file, so the access of the data from the files shall be se- quential. 2. Global data?
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For each customer banking session, customer’s bank account number and the pin shall be global so that each functional module can use it to check for accuracy whenever customer request for certain transaction. 3. File and data cross-references:
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This document was uploaded on 11/10/2009.

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Final_design - Software Design Group 4 Jason Wong Justin...

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