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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Question
Chapter 4, Problem 4.28RQ
Program Plan Intro
Data model:
A data model is a logical representation of a
The data model can be divided into three types:
- Object based data model.
- Physical data model.
- Record based data model.
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Pick and summarise ONE (1) article that uses data classification in a variety of domains. (The summary should concentrate on how the material applies to data classification analysis specifically.) Please respond to the following questions:
i. What is the problem or question(s) that this study is addressing? You should be able to locate the focal point. If there are any other issues, make a note of them as well. ii. What is the data's source? There are two or more sources of data in some studies. Give a brief description of how the data was obtained.
When building a data model, why is it sometimes preferable to
leave out certain information?
In what scenarios might a denormalized data model be preferred over a normalized one?
Chapter 4 Solutions
Database Concepts (8th Edition)
Ch. 4 - Prob. 4.1RQCh. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - What is a use case, and what is its purpose?Ch. 4 - Give an example of a data constraint.Ch. 4 - Prob. 4.6RQCh. 4 - Define the term entity, and give an example other...Ch. 4 - Explain the difference between an entity class and...Ch. 4 - Define the term attribute, and give examples for...Ch. 4 - Define the term identifier, and indicate which...
Ch. 4 - Prob. 4.11RQCh. 4 - Prob. 4.12RQCh. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - List and give an example of the three types of...Ch. 4 - Prob. 4.16RQCh. 4 - Prob. 4.17RQCh. 4 - Prob. 4.18RQCh. 4 - Define the term weak entity, and give an example...Ch. 4 - Explain the ambiguity in the definition of the...Ch. 4 - Define the term associative entity, and give an...Ch. 4 - Define the terms supertype, subtype, and...Ch. 4 - What is an exclusive subtype relationship? Give an...Ch. 4 - What is an inclusive subtype relationship? Give an...Ch. 4 - Prob. 4.25RQCh. 4 - Prob. 4.26RQCh. 4 - Prob. 4.27RQCh. 4 - Prob. 4.28RQ
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Similar questions
- Explain why it is critical to examine a data model.arrow_forwardExplain the following data analysis techniques with an example, diagram, applications, and pros and cons. 1. Discriminate Analysisarrow_forwardDiscuss the concept of denormalization in data modeling. When and why might denormalization be necessary, and what are the trade-offs?arrow_forward
- Explain the concept of dimensional modeling in data warehousing. What are facts, dimensions, and hierarchies, and how are they used to organize data for analysis?arrow_forwardA basic overview of how regression and ANN models are created.arrow_forwardDependencies within data analysis calculations can cause "biased" results. What name is given to such data dependencies?arrow_forward
- Step-by-step instructions on how to do data analysis are provided here.arrow_forwardWhat are the 3 categories of data models?arrow_forwardExplain the concept of "data aggregation" in data warehousing. How does data aggregation help in summarizing and analyzing large volumes of data, and what are some common aggregation functions?arrow_forward
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