Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Question
Chapter 6, Problem 6.18RQ
Program Plan Intro
Transaction:
A transaction is a small set of changes which must be made to the
Locks:
Resource locking is a technique which prevents the concurrent processing problems and it blocks the sharing of resources or data by locking the resources or data.
Locks can be invoked in two basic styles:
- Optimistic locking
- Pessimistic locking
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
Explain the difference between optimistic and pessimistic locking
What are the differences between multiple-granularity locking's implicit and explicit locking?
Please elucidate some of the means through which deadlocks may be broken.
Chapter 6 Solutions
Database Concepts (7th 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
Knowledge Booster
Similar questions
- When it comes to union, just where does it make the most sense to make the argument that two select statements drawn from the same database are consistent with one another?arrow_forwardCan 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_forward6. Describe the deadlock prevention method using data ordering by drawing a picture (no hand-written work). Explicitly include why deadlocks are not possible.arrow_forward
- Under what condition(s) are you able to prevent the occurrence of a deadlock? List and compare two deadlock-prevention approaches.arrow_forward“Multi version timestamp ordering algorithm is more preferable than Multi version locking scheme”. Discuss both mechanisms and give your comments in agreement /disagreement on a given statement.arrow_forwardExplain the closest nested scope rule.arrow_forward
- For each item below, specify whether the statement is true (T) or false (F). A Database Schema keeps the data in a database. Each Data Model is based on a Database Management System (DBMS). Oracle and MYSQL are two of the most popular Data Models. JDBC is a Data Manipulation Language (DML) developed for Java. Database Users may desire to perform conflicting operations at the same time. For example, in an Airline Reservation System, two on-line users may see the last empty seat while trying to reserve a seat on a flight. Security features of a DBMS prevents them from reserving the same seat, therefore avoiding inconsistent database states. In the Entity-Relationship Model (E-R), any distinguishable abstract or concrete thing is called an entity set/type. In the Entity-Relationship Model (E-R), an Attribute maps an entity to another entity (or a set of entities). A Relationship, on the other hand, maps an entity to a primitive value. "many to many" relationships in E-R map each instance…arrow_forwardContrast the terms composite key; recursive foreign key?arrow_forwardThe following results would occur if those procedures were abandoned when a deadlock was reached:arrow_forward
- "Pictures are stored in a database, and typically the design/structure we have picked includes some highly sensitive information about the drivers," the head of your section tells you. Is it not preferable to save this information in a separate file, from which only authorized users would have access? If you had to take a stand, what strategy would you employ? Provide reasons to back up your statements.arrow_forwardExplain what read uncommitted isolation level is. Give an example of its use.arrow_forwardWe have the following functional dependency A -> B. The following is a well-formed database design. MYTABLE (TheKey, A, B, C) True Falsearrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
