Pearson · Digital Information Technology · 603/7050/6
BTEC Tech Award Digital Information Technology: Notation
Effective digital working practices · Pearson BTEC Tech Award Digital Information Technology (603/7050/6), specification point 3.D1. Cards are generated from the exam board's own specification for "Notation", and every card links back to the page it came from. Specification © Pearson — used with attribution.
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Which three forms of notation must BTEC DIT learners be able to present information with?
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Data flow diagrams, information flow diagrams and flowcharts.
What does a data flow diagram (DFD) show?
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How data moves through a system — between external entities, processes and data stores.
What does a flowchart show?
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The sequence of steps and decisions in a process, using standard symbols.
What does a system diagram show?
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The main components of a system and how they are connected or interact.
What does an information flow diagram show?
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How information passes between people, departments or organisations, and in which direction.
What is the key difference between a flowchart and a data flow diagram?
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A flowchart shows the order of steps and decisions in a process; a DFD shows where data comes from, goes to and is stored, not the sequence.
Besides diagrams, which two forms of notation do organisations use to explain systems and data?
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Tables and written information.
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