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EnglandComputer ScienceQuick questions
1.3 Exchanging data
Quick questions on Transaction processing, ACID, record locking and serialisation - OCR A-Level Computer Science H446
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 the 'A' and the 'D' in ACID stand for and what each guarantees. [2 marks]
What is q2?Show answer
Explain why record locking can lead to deadlock. [2 marks]
What is q3?Show answer
State one method of providing redundancy to protect database data. [1 mark]
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