HKDSE ICT Guides & Tips
Exam guides, past-paper technique and free sample notes for HKDSE ICT.
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Exam tips
HKDSE ICT Command Words: How to Answer for Full Marks
Learn the difference between State, Define, Describe, Explain, and Justify — and how to answer each for full marks in HKDSE ICT structured questions.
10 Common Mistakes in HKDSE ICT Paper 1 (and How to Fix Them)
From confusing validation with verification to SQL clause order — learn the mistakes that cost HKDSE ICT students marks every year, with clear fixes.
SQL Survival Guide for HKDSE ICT Paper 2A
SQL clause order, WHERE vs HAVING, INNER vs LEFT JOIN, DDL vs DML — every pattern you need for Paper 2A Databases, with worked examples and a 20-query drill plan.
Sample notes
Number Systems & Binary Arithmetic — Free HKDSE ICT Study Notes
Binary, decimal, hexadecimal conversions; two's complement; binary arithmetic; BCD & Gray code; storage calculations — everything that recurs in HKDSE ICT MCQs and structured questions.
ER Diagrams & Normalisation to 3NF — Free HKDSE ICT Study Notes
ER modelling (Chen notation, relationships, participation); keys (PK/FK/candidate/composite); normalisation ladder 1NF→2NF→3NF with running example; exam patterns — every database concept tested in HKDSE ICT Paper 2.