Pearson eText for Modern Database Management -- Instant Access (Pearson+)
13th Edition
ISBN: 9780137305940
Author: Jeffrey Hoffer, Ramesh Venkataraman
Publisher: PEARSON+
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Textbook Question
Chapter 4, Problem 4.7RQ
Describe the three types of anomalies that can arise in a table and the negative consequences of each.
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Consider the three DFDs in Figure 6-23. Listthree errors (rule violations) on these DFDs
Explain the distinctions between the conceptual and logical data models.
Can We use ARDL model for the following information? If not, what isyour suggestion for the model? If yes, why?Table 1. Unit Root TestVariable Level First Difference Second DifferenceUN 0.0000*GR 0.0022INF 0.3720 0.0000INT 0.2682 0.0059WAGE 0.0226TAXIN 0.8565 0.0016EDU 0.1404 0.2333 0.0000FEMALE 0.0435URBAN 0.3330 0.3471 0.0188
*These numbers show the P-Value.
Table2. Cointegration TestHypothesized Trace 0.05No. of CE(s) Eigenvalue Statistic Critical Value Prob.**None * 0.998292 580.3047 159.5297 0.0000At most 1 * 0.991600 408.2568 125.6154 0.0000At most 2 * 0.977966 279.2106 95.75366 0.0000At most 3 * 0.960113 176.2016 69.81889 0.0000At most 4 * 0.748764 89.21584 47.85613 0.0000At most 5 * 0.624056 51.91909 29.79707 0.0000At most 6 * 0.528664 25.50456 15.49471 0.0011At most 7 * 0.175048 5.195616 3.841466 0.0226
Chapter 4 Solutions
Pearson eText for Modern Database Management -- Instant Access (Pearson+)
Ch. 4 - Define each of the following terms: determinant...Ch. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - Describe the primary differences between the...Ch. 4 - Summarize six important properties of relations.Ch. 4 - Describe two properties that each candidate key...Ch. 4 - Describe the three types of anomalies that can...Ch. 4 - Demonstrate each of the anomaly types with an...Ch. 4 - Fill in the blanks in each of the following...Ch. 4 - What is a well-structured relation? Why are...
Ch. 4 - Prob. 4.11RQCh. 4 - Describe how the following components of an E-R...Ch. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - Briefly describe four typical problems that often...Ch. 4 - Prob. 4.16RQCh. 4 - Explain how each of the following types of...Ch. 4 - Prob. 4.18RQCh. 4 - Prob. 4.19RQCh. 4 - Prob. 4.20RQCh. 4 - Prob. 4.21RQCh. 4 - What is the relationship between the primary key...Ch. 4 - Prob. 4.23RQCh. 4 - Explain what can be done with primary keys to...Ch. 4 - Prob. 4.25RQCh. 4 - Explain three conditions that suggest a surrogate...Ch. 4 - Prob. 4.27RQCh. 4 - For each of the following E-R diagrams from...Ch. 4 - Prob. 4.29PAECh. 4 - Prob. 4.30PAECh. 4 - For your answers to the following Problems and...Ch. 4 - Figure 4-3212 shows a class list for Millennium...Ch. 4 - Prob. 4.33PAECh. 4 - Prob. 4.34PAECh. 4 - Prob. 4.35PAECh. 4 - Prob. 4.36PAECh. 4 - Prob. 4.37PAECh. 4 - Prob. 4.38PAECh. 4 - Prob. 4.39PAECh. 4 - Transform Figure 2-15a, attribute version, to 3NF...Ch. 4 - The Public Safety office at Millennium College...Ch. 4 - Prob. 4.42PAECh. 4 - Prob. 4.43PAECh. 4 - Prob. 4.44PAECh. 4 - For your answers to Problem and Exercise 3-33 from...Ch. 4 - Prob. 4.46PAECh. 4 - Prob. 4.47PAECh. 4 - Figure 4-38 includes an EER diagram for a...Ch. 4 - Prob. 4.49PAECh. 4 - Prob. 4.50PAECh. 4 - Prob. 4.51PAECh. 4 - Prob. 4.52PAECh. 4 - Figure 4-40 shows an EER diagram for a university...Ch. 4 - Explore the data included in Table 4-9. Assume...Ch. 4 - Prob. 4.55PAECh. 4 - Prob. 4.56PAECh. 4 - Prob. 4.57PAECh. 4 - Prob. 4.58PAE
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