EP MINDTAPV2.0 FOR CORONEL/MORRIS'S DAT
13th Edition
ISBN: 9780357427866
Author: Coronel
Publisher: Cengage Learning
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Chapter 9, Problem 15RQ
Program Plan Intro
- It is a process of restoring the contents of the database from an inconsistent state to a state that was consistent previously.
- It is process of bringing the database to a consistent state after a failure.
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using r language
using r language
You are given a class that processes purchases for an online store. The class receives calls to:
•
Retrieve the prices for items from a database
• Record the sold items
•
Update the database
•
Refresh the webpage
a. What architectural pattern is suitable for this scenario? Illustrate your answer by drawing a
model for the solution, showing the method calls/events.
b. Comment on how applying this pattern will impact the modifiability of the system.
c. Draw a sequence diagram for the update operation.
Chapter 9 Solutions
EP MINDTAPV2.0 FOR CORONEL/MORRIS'S DAT
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