DFD data flow (labelled arrow)

Diagram

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Definition

A labelled, curved arrow shows the flow of data between processes, data stores and external entities. Always label it with the data name.

Example: Arrow labelled Order details.

Found in: course specifications.

Where you'll use it in the test

Syllabus area: Diagrams and tools.

Question types it can appear in

Drawing: Draw or label it in the online drawing tool.
Multiple choice: Pick the option that matches the definition or example.

Where it has appeared in the paper

The Software Engineering Project (Part D). Part letters follow each paper’s own layout.

How to use it

A model sentence

General advice, built from the definition and example above

Diagram: “A labelled, curved arrow shows the flow of data between processes, data stores and external entities.” Then apply it: Arrow labelled Order details.

In a short answer, give the definition in your own words first, then tie it to the situation in the question. Do not copy the example above unless it fits the scenario.

Go deeper

Flashcard: DFD data flow (labelled arrow) in Diagrams and Modelling Tools (Years 11 and 12) · study that set
Memorise: Drawing rules: DFD, structure chart, storyboard, decision tree, class diagram, ERD
Full term page: every question, note and marking comment for DFD data flow (labelled arrow)

Check yourself

Describe or sketch “DFD data flow (labelled arrow)”: what it shows, its parts and when you would use it.

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