Entity relationship diagrams, data structure tables, method of solution, 2D array traces, system changeover, data security, GUI vs CLI, and access rights — all eight Unit 2 Section A topics in one gamified skill path. Earn XP, collect stars, and build your exam readiness topic by topic.
Work through each topic in order. Click any unlocked node to launch the quiz. Earn three stars to master a topic and unlock the next one.
Past paper mark scheme language, distilled into eight topic cards. Click Quick Quiz on any card to test yourself instantly.
The Unit 2 paper tests your ability to draw ERDs and complete data structure tables. Use these tools to practise past paper scenarios and build exam-ready answers.
Step through every past paper ERD scenario from 2016 to 2025. See the tables, relationships, and cardinality for each, then read the mark scheme context below the diagram. Earn +2 XP per scenario.
Build a data structure table field by field, just like the 10-mark Section A question. Enter the field name, pick the data type, set the key field, and add two different validation checks. Earn +5 XP per field added.
Key Unit 2 terms and definitions. Click the card to flip it, then mark whether you know it. Cards you mark as unknown cycle back around. Earn +5 XP for every card you know.
Trace through the 2022, 2023, 2024, and 2025 past paper array algorithms one step at a time. These trace table questions are worth 8 marks in the exam.
Earn XP by completing quizzes and using the interactive tools. Your score updates live as you work through the topics.