Database Systems: Design, Implementation, & Management
13th Edition
ISBN: 9780357155868
Author: Carlos Coronel; Steven Morris
Publisher: Cengage Learning US
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Chapter 10, Problem 3P
Program Plan Intro
Concurrency control:
The purpose of concurrency control is to ensure the serializability of transaction in multiuser
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8. Name and Email AddressesWrite a program that keeps names and email addresses in a dictionary as key-value pairs. The program should display a menu that lets the user look up a person’s email address, add a new name and email address, change an existing email address, and delete an existing name and email address. The program should pickle the dictionary and save it to a file when the user exits the program. Each time the program starts, it should retrieve the dictionary from the file and unpickle it.
How would the user be able to use the program?
Please solve and answer the question correctly please. Thank you!!
Please solve and answer the question correctly please. Thank you!!
Chapter 10 Solutions
Database Systems: Design, Implementation, & Management
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