A Level Computing - Databases Key Terms

OCR A-Level Computer Science

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Last updated: December 18, 2018

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First submitted	December 13, 2018
Times taken	71
Average score	38.5%
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Question	Answer
What term refers to the managing of an input to a database?	Transaction processing
What does the A stand for in ACID?	Atomicity
What does the C stand for in ACID?	Consistency
What does the I stand for in ACID?	Isolation
What does the D stand for in ACID?	Durability
Why is data redundancy bad?	Waste of space
What prevents the simultaneous editing of a record by two different users?	Record locking

Question	Answer
What does the C stand for in CRUD?	Create
What does the R stand for in CRUD?	Read
What does the U stand for in CRUD?	Update
What does the D stand for in CRUD?	Delete
What is cascading delete a good example of?	Referential integrity
What term refers to the prevention of incomplete transactions causing data corruption?	Data integrity

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