Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
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Chapter 6, Problem 6.10RQ
Program Plan Intro
Transaction:
A transaction is a small set of changes which must be made to the
- Read:
- Used to retrieve information form database
- Write:
- Used to insert or update the information or data from the database
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When is denormalization justified?
Give a normalized version of the Index metadata relation, and explain whyusing the normalized version would result in worse performance.
Suppose you're interested in recording the history of changes made to the takes relation. Have any assurances been made that unauthorized database administrators (or those who manage to crack an administrator's password) would be recorded in an audit trail of modifications made by this implementation? Your reply need to include many specifics.
Chapter 6 Solutions
Database Concepts (8th Edition)
Ch. 6 - Prob. 6.1RQCh. 6 - Explain how database administration tasks vary...Ch. 6 - Prob. 6.3RQCh. 6 - Prob. 6.4RQCh. 6 - Prob. 6.5RQCh. 6 - Prob. 6.6RQCh. 6 - Prob. 6.8RQCh. 6 - Prob. 6.9RQCh. 6 - Prob. 6.10RQCh. 6 - Prob. 6.11RQ
Ch. 6 - Prob. 6.12RQCh. 6 - Prob. 6.13RQCh. 6 - Prob. 6.14RQCh. 6 - Prob. 6.15RQCh. 6 - Prob. 6.16RQCh. 6 - Prob. 6.17RQCh. 6 - Prob. 6.18RQCh. 6 - Explain the benefits of marking transaction...Ch. 6 - Explain the use of the SQL transaction control...Ch. 6 - Prob. 6.21RQCh. 6 - Describe statement-level consistency.Ch. 6 - Prob. 6.23RQCh. 6 - Prob. 6.24RQCh. 6 - Prob. 6.25RQCh. 6 - Prob. 6.26RQCh. 6 - Prob. 6.27RQCh. 6 - Explain what serializable isolation level is. Give...Ch. 6 - Explain the term cursor.Ch. 6 - Prob. 6.30RQCh. 6 - What is the advantage of using different types of...Ch. 6 - Explain forward-only cursors. Give an example of...Ch. 6 - Explain static cursors. Give an example of their...Ch. 6 - Prob. 6.34RQCh. 6 - Prob. 6.36RQCh. 6 - Prob. 6.37RQCh. 6 - Describe the advantages and disadvantages of...Ch. 6 - Prob. 6.40RQCh. 6 - Prob. 6.41RQCh. 6 - Prob. 6.42RQCh. 6 - Prob. 6.44RQCh. 6 - Prob. 6.45RQCh. 6 - What is the advantage of making frequent...Ch. 6 - Summarize a DBAs responsibilities for managing...Ch. 6 - Prob. 6.48RQCh. 6 - Prob. 6.49RQCh. 6 - Prob. 6.50E
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- Can you think of scenarios in which using default values will improve data integrity as well as conditions in which doing so would damage it?arrow_forwardWhich of the studied data structures in this course would be the most appropriate choice for the following tasks? And Why? a. An Exam Center needs to maintain a database of 3000 students' IDs who registered in a professional certification course. The goal is to find rapidly whether or not a given ID is in the database. Hence, the speed of response is very important; efficient use of memory is not important. No ordering information is required among the identification numbers. b. A transposition table is a cache of previously seen positions in a game tree generated by a computer game playing program. If a position recurs via a different sequence of moves, the value of the position is retrieved from the table, avoiding re-searching the game tree below that position.arrow_forwardSay you're interested in recording every instance in which the takes relation was changed. Is there any assurance that an audit trail of modifications made by this implementation will include actions taken by malicious database administrators (or anybody who acquires access to the administrator's password)? Provide specifics in your reply.arrow_forward
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