Write one log record to disk while a previous record

Assignment Help Basic Computer Science

Reference no: EM131212753

Repeat Exercise 17.2.2 for redo logging.

Exercise 17.2.2

For each of the sequences of log records representing the actions of one transaction T, tell all the sequences of events that are legal according to the rules of undo logging, where the events of interest are the writing to disk of the blocks containing database elements, and the blocks of the log containing the update and commit records. You may assume that log records are written to disk in the order shown; i.e., it is not possible to write one log record to disk while a previous record is not written to disk.

Reference no: EM131212753

Questions Cloud

Comment on the merits and drawbacks : In the 1987 World Bank study, India was categorized as having a strongly inward t Comment on the merits and drawbacks of the following available choices: - Unilaterally taxing its wheat exports.rade policy.

What is the effect on the disk value : What does this example say about the ability of logging by itself to preserve atomicity of transactions?

What societal values and economic goals have caused : What societal values and economic goals have caused the two Asian countries to adopt different financial reporting standards?

Problems in the field of marketing : In 2010, the U.S. Centers for Disease Control and Prevention projected that by 2050, one in three Americans would have diabetes (HealthDay, 2010). On the one hand, for organizations such as food producers and restaurants specializing in high sugar..

Write one log record to disk while a previous record : You may assume that log records are written to disk in the order shown; i.e., it is not possible to write one log record to disk while a previous record is not written to disk.

Effective marketing communications : How does the electronic medium require different tactics for effective marketing communications?

How would you handle ownership of the assessment : Why are these elements critical to success? Which members of the organization should be involved in the development of the assessment? How would you handle ownership of the assessment?

How many orders of the lock, unlock, read, and write action : For each of the transactions described below, suppose that we insert one lock and one unlock action for each database element that is accessed.

Discuss roles internal audit groups play in preventing fraud : In outlining your plan, discuss the roles the Internal Audit will play in preventing fraud: Why is each of the groups above reluctant to take the responsibility for detecting and preventing fraud?

User Account

All Pages