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EnglandComputer ScienceQuick questions
Component 2: Computer Architecture, Data, Communication and Applications
Quick questions on Files, relational databases, normalisation and SQL - Eduqas A-Level Computer Science Component 2
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 the purpose of a foreign key. [1 mark]
What is q2?Show answer
Write an SQL statement to select all fields from a Customer table where the City is 'Cardiff'. [2 marks]
What is q3?Show answer
What does third normal form (3NF) remove that second normal form does not? [1 mark]
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