Concepts of Database Management
8th Edition
ISBN: 9781285427102
Author: Philip J. Pratt, Mary Z. Last
Publisher: Cengage Learning
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Chapter 7, Problem 7RQ
To determine
To define transaction.
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Students have asked these similar questions
A Personal Address Book application program allows the user to add, delete, search, save, and
load contact information. The program separates the user interface (command-line) and the
internal processing subsystem. The internal processing system consists of the following classes:
•
•
Contact Manager (responsible for add and delete operations)
Contact Finder (responsible for the search operation)
pataManager (responsible for save and load operations)
a. What design pattern can be used to implement the user interface? Explain your answer using a
class diagram for the entire system.
b. Draw a UML sequence diagram to show the behavioral view of the Personal Address Book
program, demonstrating what happens when a user enters new contact information.
A system comprises three components: A, B, and C. Calling A requires calling B, and calling B
requires calling A. Component C is responsible for dissimilar tasks T#1, #2, and T#3.
a. Comment on the modifiability of this system. What problems do you see in this system, and
how would you solve them?
b. Suppose that T#1 is performed by both component A and C. What does this indicate about A
and C? How would you solve this problem?
Please answer questions from number 1 to 3 if these questions in the image provided below(NOTE: THESE QUESTIONS ARE NOT GRADED!)
Chapter 7 Solutions
Concepts of Database Management
Ch. 7 - Prob. 1RQCh. 7 - Prob. 2RQCh. 7 - Prob. 3RQCh. 7 - Prob. 4RQCh. 7 - Prob. 5RQCh. 7 - Prob. 6RQCh. 7 - Prob. 7RQCh. 7 - Prob. 8RQCh. 7 - Prob. 9RQCh. 7 - Prob. 10RQ
Ch. 7 - Prob. 11RQCh. 7 - Prob. 12RQCh. 7 - Prob. 13RQCh. 7 - Prob. 14RQCh. 7 - Prob. 15RQCh. 7 - Prob. 16RQCh. 7 - Prob. 17RQCh. 7 - Prob. 18RQCh. 7 - Prob. 19RQCh. 7 - Prob. 20RQCh. 7 - Prob. 21RQCh. 7 - Prob. 22RQCh. 7 - Prob. 23RQCh. 7 - Prob. 24RQCh. 7 - Prob. 25RQCh. 7 - Prob. 26RQCh. 7 - Prob. 27RQCh. 7 - Prob. 28RQCh. 7 - Prob. 1TDECh. 7 - Prob. 2TDECh. 7 - Prob. 3TDECh. 7 - Prob. 4TDECh. 7 - Prob. 5TDECh. 7 - Prob. 6TDECh. 7 - Prob. 1CATCCh. 7 - Prob. 2CATCCh. 7 - Prob. 3CATCCh. 7 - Prob. 1SCGCCh. 7 - Prob. 2SCGCCh. 7 - Prob. 3SCGCCh. 7 - Prob. 4SCGCCh. 7 - Prob. 5SCGC
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