N4  ·  ISDD  ·  Information System Design & Development

Features and Functionality

National 4 Computing ScienceLesson ISDD6 of 9Approx 50 minN4-only evidence
Learning intentions
  • Separate features from functionality
  • Describe one main feature and one key function of an information system
  • Produce clear N4 Outcome 2.1 evidence
Success criteria
  • I can describe what the system has or includes
  • I can describe what the system does for the user
  • I can avoid vague answers such as "it is easy to use"

The Difference That Matters

This is a known risk area in verification: pupils often mix up features and functionality. Keep the distinction simple.

WordMeaningBike Scotland example
FeatureSomething the information system has or includesThe webpage has navigation links and bike images. The database has linked tables.
FunctionalitySomething the information system does for the userThe database lets the user search for bikes by type. The webpage lets users view bike details.

A good answer describes one of each in simple terms. It does not just name them.

N4 Evidence Task

Practical Task 1 - Describe a feature and a function

Use your Bike Scotland database and companion webpage. Write one short paragraph for a basic feature and one short paragraph for a key function.

Sentence starters:

  • One feature of my information system is...
  • This is useful because...
  • One function of my information system is...
  • This allows the user to...
N4 evidence checklist
  • Describes one basic feature of the information system (N4 O2.1)
  • Describes one key function of the information system (N4 O2.1)
  • Uses the pupil's own database/webpage, not a generic app
Weak answers to avoid
  • "The website has pictures." This names a feature but does not describe it.
  • "The database is good." This is too vague.
  • "A feature is searching." Searching is usually functionality because it is something the system does.

Task Set

1. Which is a feature? TYPE 1

2. Which is functionality? TYPE 1

3. Write your N4 feature and functionality answer. TYPE 3 N4

One feature of my information system is that the webpage includes bike images next to text details such as model and price. This helps users recognise the type of bike. One function is that the database can search for bikes by type, which allows the shop to quickly find mountain, road or racing bikes.
Teacher notes - Shift+T to hide

Assessment standard covered: N4 O2.1. This page directly targets the verification risk around confusing features with functionality.