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Northern IrelandDigital TechnologyQuick questions
A2 1 Information Systems
Quick questions on Relational databases: keys, ER modelling and normalisation - CCEA A-Level Digital Technology
3short Q&A pairs drawn directly from our worked dot-point answer. For full context and worked exam questions, read the parent dot-point page.
What is q1?Show answer
State what a primary key does. [1 mark]
What is q2?Show answer
Name the type of relationship between Customers and Orders if one customer can place many orders. [1 mark]
What is q3?Show answer
Explain one anomaly that normalisation to 3NF helps to avoid. [2 marks]
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