Q: Why might a page-level lock be preferred over a field
Why might a page-level lock be preferred over a field-level lock?
See AnswerQ: What is concurrency control, and what is its objective?
What is concurrency control, and what is its objective?
See AnswerQ: What is an exclusive lock, and under what circumstances is it
What is an exclusive lock, and under what circumstances is it granted?
See AnswerQ: What is a deadlock, and how can it be avoided?
What is a deadlock, and how can it be avoided? Discuss several strategies for dealing with deadlocks.
See AnswerQ: What are some disadvantages of time-stamping methods for concurrency control
What are some disadvantages of time-stamping methods for concurrency control?
See AnswerQ: Why might it take a long time to complete transactions when an
Why might it take a long time to complete transactions when an optimistic approach to concurrency control is used?
See AnswerQ: What are the three types of database critical events that can trigger
What are the three types of database critical events that can trigger the database recovery process? Give some examples for each one.
See AnswerQ: What are the four ANSI transaction isolation levels? What type of
What are the four ANSI transaction isolation levels? What type of reads does each level allow?
See AnswerQ: Write a query to produce the number of invoices and the total
Write a query to produce the number of invoices and the total purchase amounts by customer, using the output shown in Figure P7.35 as your guide. (Compare this summary to the results shown in Problem...
See AnswerQ: What is a consistent database state, and how is it achieved
What is a consistent database state, and how is it achieved?
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