Structure Diagrams (OCR GCSE Computer Science)
Revision Note
Written by: Robert Hampton
Reviewed by: James Woodhouse
Structure Diagrams
What is a structure diagram?
A structure diagram is a visual representation of problem decomposition
A tool to show how a complex problem can be broken down into more manageable sub problems
A planning tool for developers during the analysis of a problem
Worked Example
A hairdressers uses a mobile phone app to allow clients to book appointments.
Clients must log in before they can use the system. They then choose to book a new appointment, view all appointments already made or update their personal details. If clients choose to view their appointments, they can either view them on-screen or print them off.
A structure diagram has been used to design the mobile phone app.
Write one letter from the following table in each space to complete the structure diagram [4]
Letter | Task |
|---|---|
A | Book new appointment |
B | View appointments on screen |
C | Update personal details |
D | Check price list |
E | Log out of system |
F | Print a paper copy of appointments |
Answer
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