Database Concepts (8th Edition)
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 1, Problem 1.22RQ

Explanation of Solution

Metadata:

Data present in a data warehouse, which is used to represent other data is called Metadata.

It is used to define structure of a database and summarizes information about the data itself.

Use of Metadata:

  • To locate the contents of a data warehouse, metadata acts as a directory to assist the decision support system.

Example:

For a student,

  • The record containing attributes such as ...

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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!!
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