Modern Database Management (12th Edition)
12th Edition
ISBN: 9780133544619
Author: Jeffrey A. Hoffer, Ramesh Venkataraman, Heikki Topi
Publisher: PEARSON
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Chapter 4, Problem 4.14RQ
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Importance of normalization that EER conversion leads to a normalized set of relations.
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Why is normalization useful, given that EER conversation will typically lead to a normalized set of relations?
What is the purpose of normalization, given that an EER dialogue will almost always result in a normalized set of relations?
What is the importance of normalization that EER conversion leads to a normalized set of relations.
Chapter 4 Solutions
Modern Database Management (12th Edition)
Ch. 4 - Prob. 4.1RQCh. 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 - For your answers to the following Problems and...Ch. 4 - Transform Figure 2-15a, attribute version, to 3NF...Ch. 4 - Prob. 4.41PAECh. 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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- Use normalization to decompose a relation with anomalies into well-structured relations?arrow_forwardGiven that an EER discourse almost always provides a normalised set of relations, it is unclear what the purpose of normalisation is.arrow_forwardWhy is normalization useful, given that EER conversion will typically lead to a normalized set of relations?arrow_forward
- Select the best answer regarding the FK value, if it is part of a PK Select one: a. Can not be null b. Must mach a value in the PK in the home relation c. some times it can be null d. it must be uniquearrow_forwardWhat is the difference between the implementation of 1:M unary relationship and M: N unary relationship in a relational data model.arrow_forwardGiven the Relational Model Notation below, extend it to defineUNIQUE and NON-UNIQUE indexes for relations.arrow_forward
- So SQL does not suppor functional depency constraints. However, if the database system supports constraints on materialized views and materialized views are maintained immediately, is it possible to enforce the functional dependency constraints in SQL? If it is possible, for a relation r(A,B,C), how can the constraints on materialized views be used to enforce a functional dependency, like B->A?arrow_forwardConvert ERD into Relational Model - show referential integrity appropriatelyarrow_forwardMany one-to-many connections may be pieced together to form a connection like the second track. Do the constraints of having a primary and foreign key impose the many-to-one cardinality limitation on the relation? Can you explain why you think that?arrow_forward
- It is not quite apparent what the purpose of normalization is given that an EER discourse will almost always produce a normalized set of relations.arrow_forwardReview FamCation relations and determine if they are all in 3NF. If not, which relations do you need to normalize and how?arrow_forwardShould the cardinality between entities be translated/read from both ends of the notation when dealing with database entity relationship modeling? To put it another way, can a connection between two things be comprehended by reading it both forward and backward?arrow_forward
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