Computer Science Ia

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  • Topic: Mathematics, Data model, Data structure
  • Pages : 15 (2828 words )
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  • Published : February 14, 2011
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COMPUTER SCIENCE INTERNAL ASSESSMENT

CANDIDATE NAME:

CANDIDATE NUMBER:

SCHOOL
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CENTRE NUMBER:

TOPIC: TO Design a Computer Based Solution For a Business

 

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TABLE OF CONTENTS
SYSTEM REQUIREMENTS o PROBLEM DEFINITION ...................................................................................1 o TECHNIQUES OF DATA COLLECTION...............................................................3 o REQUIREMENTS............................................................................................4 o CONTEXT DIAGRAM.......................................................................................5 o LEVEL 1 DATA FLOW DIAGRAM.......................................................................6 o ENTITY RELATIONSHIP DIAGRAM....................................................................7 DESIGN SPECIFICATION o SYSTEM STRUCTURE CHART.........................................................................8 o USER INTERFACE DESIGN.............................................................................9 Changed with the DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). o REPORT DESIGN.........................................................................................11 o DATA DICTIONARY.......................................................................................12 o ALGORITHM.................................................................................................13 CODING AND TESTING o CODING OF SOLUTION TO PROBLEM..............................................................22 o TESTING OF CODED SOLUTIONS...................................................................33

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SYSTEM REQUIREMENTS
DEFINITION OF PROBLEM

Introduction: A university needs to replace their current system with a new system to fit certain specifications. The old system was used to find the correlation of two subjects which would tell the university if two subjects would make a favourable combination for their students (major and minor combination choices). The system uses marks of two subjects to calculate and present the correlation in a report.

Problem definition: The current system to be replaced is not integrated therefore only allowed data to be enter

Changed with thethe system and calculated instantly, which is not the case in many different real life into DEMO VERSION of CAD-KAS PDF-Editor (http://www.cadkas.com). situations in which the person who collects and enters the marks is a person who has no interest in the correlation value the data is used by someone else for a specific reason; in this system it is finding the correlation of two subjects. Hence, the university requests their current system to be adapted to allow for the data to be entered without calculating the correlation value and be saved for use of the data by the university head of departments to calculate the desired correlation values.

 



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Problem scope: To create a system which will allow the university examiners to enter the subject codes, candidate numbers and marks obtained into a single storage file to be saved. The program then should allow for the university head of subject departments to utilize the storage file to retrieve data and to calculate the correlation value. The system allows for multiple different subjects to be available....
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