Software DD (Analysis: Purpose, Scope, Boundaries, Functional Requirements)

Question 1

Purpose

Answer 1

A general description of the purpose of the software.

Text from RGC Aberdeen website

Question 2

Scope

Answer 2

A list of the deliverables that the project will hand over to the client and/or end-user, eg design, completed program, test plan, test results and evaluation report. It can also include any time limits for the project.

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Question 3

Boundaries

Answer 3

The limits that help to define what is in the project and what is not. It can also clarify any assumptions made by the software developers regarding the client’s requirements.

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Question 4

Functional Requirements

Answer 4

The features and functions that must be delivered by the system in terms of inputs, processes and outputs.

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Question 5

Purpose
(A teacher needs a program that will process the prelim and coursework marks for their class of 20 pupils which are held in a file. They will also need to find the percentages and the best performing student. The name(s) of the pupils with the highest mark will be written to a new file.)

Answer 5

To take 20 pupil names, their prelim marks and their assignment marks from a file into parallel arrays. Calculate the percentage, and then find and display the name and percentage of the pupil with the highest percentage.

A sample of the file is shown below:
Joe Smith, 40,50
Anna Jones, 30,60
…

Text from RGC Aberdeen website

Question 6

Scope
(A teacher needs a program that will process the prelim and coursework marks for their class of 20 pupils which are held in a file. They will also need to find the percentages and the best performing student. The name(s) of the pupils with the highest mark will be written to a new file.)

Answer 6

This development involves creating a modular program. And the deliverables include:
* detailed design of the program structure
* test plan with completed test data table
* working program
* results of testing
* evaluation report
* This development work must be completed within 4 hours

Text from RGC Aberdeen website

Question 7

Boundaries (and Assumptions)
(A teacher needs a program that will process the prelim and coursework marks for their class of 20 pupils which are held in a file. They will also need to find the percentages and the best performing student. The name(s) of the pupils with the highest mark will be written to a new file.)

Answer 7

Boundaries: the limits that help to define what is in the project. It can also clarify any assumptions made.

• The program will read the pupil data (name, prelim mark and assignment mark) for 20 pupils from a text file.
• The only output needed is the name and percentage of the pupil with the highest percentage.
• The minimum percentage is 0 and the maximum percentage is 100

Assumptions (these can dictate the direction of development)

• The data is accurate, so there is no need to implement input validation.
• Each row in the file will have one set of data
• The arrays will have 20 elements.

Text from RGC Aberdeen website

Question 8

Functional Requirements
(A teacher needs a program that will process the prelim and coursework marks for their class of 20 pupils which are held in a file. They will also need to find the percentages and the best performing student. The name(s) of the pupils with the highest mark will be written to a new file.)

Answer 8

These are defined in terms of the inputs, processes and outputs. All inputs are imported from a file and all outputs displayed on the screen.

Each process will be a separate procedure or function that is called from the main program.

The inputs, processes and output required are shown below:
1 Inputs:
1.1Read in the Pupil Name, Prelim Mark , Assignment Mark from an external file
2 Processes
2.1 Calculate the percentage for each pupil
2.2 Find the highest percentage
3 Output
3.1 Display the name(s) of the pupil with the highest percentage
3.2 Write the names of all puplils with the highest mark to a new file

Text from RGC Aberdeen website