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Data dictionary
Term Diagram Key terms bank Y12 SE Project Diagrams and tools
Also listed as: Data dictionary (specification)
Definition
Data dictionary Y12 SE Project Term
A table listing each data item with its name, data type, size or format, description and validation rules.
Example: Age | Integer | 0-120.
Found in: syllabus, course specifications, school notes.
Data dictionary (specification) Diagrams and tools Diagram
Describes every variable: name, data type, format for display, size in bytes, size for display, description, example and validation rules.
Example: DOB | Date | YYYY/MM/DD | 4 | 10 | birth date | 1953/10/05 | valid date before today.
Found in: course specifications, 2025 HSC marking guidelines, school notes, past SDD papers.
Table describing every variable (type, format, size, description, example, validation).
Where it is used in the test
Syllabus area: Y12 SE Project Diagrams and tools.
Question types it can appear in
- Drawing: Data dictionary: Complete a data dictionary Data dictionary (specification): Complete a data dictionary (2025 Q15a)
- Multiple choice: Pick the option that matches the definition or example.
- Short answer: Define, outline or explain it and tie it to the scenario.
- Fill in the blanks: Choose this term to complete a statement or table.
Where it has appeared in the paper
The Software Engineering Project (Part A, D). Part letters follow each paper’s own layout.
Related past questions
- 2025 HSC Q15a (3 marks): Data dictionary The Software Engineering Project (Part A) · 3 marks
- 2024 Software Design and Development HSC Q22 (11 marks): Documentation, data dictionary, testing (shopkeeper website) The Software Engineering Project (Part D) · 11 marks · old syllabus
- 2024 Software Design and Development HSC Q25 (4 marks): Documentation The Software Engineering Project (Part D) · 4 marks · old syllabus
These are the questions the flashcard set links to this term. Open each one and compare your answer with its marking criteria.
Study links
- Flashcard: Data dictionary in The Software Engineering Project (Year 12) · study that set
- Flashcard: Data dictionary (specification) in Diagrams and Modelling Tools (Years 11 and 12) · study that set
- Memorise: Define and analyse the requirements of a problem
- Memorise: Drawing rules: DFD, structure chart, storyboard, decision tree, class diagram, ERD
- Key terms bank entry: Data dictionary
- Notes: Part 3. Where this has been examined (see ../../question_bank.md) (The Software Engineering Project (Year 12))
- Master answer: sdd2024-q22 (11 marks, extended) (Master model answers: The Software Engineering Project (written answers))
- Notes: Interpret and apply fundamental software development steps to develop secure code,… (Secure Software Architecture (Year 12))
- Notes: Data dictionary (The Software Engineering Project (Year 12))
How to use it in an answer
A model sentence
“A table listing each data item with its name, data type, size or format, description and validation rules.” Then apply it: Age | Integer | 0-120.
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.
Command words used with it
- Explain: Relate cause and effect; make the relationship between things evident; provide why and/or how. (2024 Software Design and Development HSC Q25 (4 marks): Documentation)
Technique for the question types
- Drawing: Use the online drawing tool: label every symbol and arrow, use the correct symbols from the specification, and add every required item.
- Multiple choice: Read all four options, rule out wrong ones, pick one; no penalty for guessing so never leave blank.
- Short answer: One clear point per mark, use the stimulus and course terms, and answer the command word.
- Fill in the blanks: Choose the right word from a list; use exact syllabus terms.
What the marking guidelines and feedback say
Know the data dictionary columns: Variable, Data type, Format for display, Size in bytes, Size for display, Description, Example, Validation.
Old-syllabus question. Use for practice on the overlapping skill only. The new Software Engineering exam does not use the old SDD terms (e.g. CASE tools, system flowcharts, EBNF, assembly).
Old-syllabus question. Use for practice on the overlapping skill only. The new Software Engineering exam does not use the old SDD terms (e.g. CASE tools, system flowcharts, EBNF, assembly).
Common mistakes
- Drawing questions (2025 HSC exam Q22): refine attributes into separate inherited classes; use appropriate class diagram symbols.
- Use the term exactly as the syllabus words it, then link it to the scenario in the question; the 2025 feedback repeatedly rewards using the stimulus.
- Answer the command word: outline gives main points only, explain gives a reason or cause, discuss gives both sides.
Related terms
Same group in the syllabus: Requirements · Need or opportunity · Feasibility · Functionality and performance requirements · Boundaries · Data structures and data types (defining) · Brainstorming, mind-mapping and storyboards · Code generation · Installation · Maintenance · Class diagram · Class diagram inheritance and multiplicity · Entity relationship diagram (ERD) · Storyboard