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Northern IrelandDigital TechnologyQuick questions
A2 1 Information Systems
Quick questions on Optimising and securing databases - 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 one benefit and one drawback of adding an index to a field. [2 marks]
What is q2?Show answer
Explain what referential integrity prevents. [2 marks]
What is q3?Show answer
State one security measure that makes stolen data unreadable. [1 mark]
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