Modern Database Management (12th Edition)
12th Edition
ISBN: 9780133544619
Author: Jeffrey A. Hoffer, Ramesh Venkataraman, Heikki Topi
Publisher: PEARSON
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Question
Chapter 4, Problem 4.3RQ
Program Plan Intro
(a)
Contrast Normal Form and Normalization
Program Plan Intro
(b)
Contrast Candidate Key and Primary Key.
Program Plan Intro
(c)
Contrast Partial dependency and Transitive Dependency.
Program Plan Intro
(d)
Contrast Composite key and Recursive Foreign Key.
Program Plan Intro
(e)
Contrast Determinant and Candidate Key.
Program Plan Intro
(f)
Contrast Foreign Key and Primary Key.
Program Plan Intro
(g)
Contrast Natural Primary key and Surrogate Primary key.
Program Plan Intro
(h)
Contrast Enterprise Key and Surrogate key.
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Draw the dependency diagram and label the primary key(s), partial dependency(s) and transitive dependency.
Based on the dependency diagram in Question (a), show the Second Normal Form (2NF) relations.
Convert the relations to the Third Normal Form (3NF).
In a composite primary key, a prospective key is a prospective characteristic.
Define the term Surrogate primary key?
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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- 119. Which is the process of breaking a relation into multiple relations: a. Functional dependency b. Database modeling c. Normalization d. Decompositionarrow_forwardWhat is a criterion of a table being in first normal form? All transitive functional dependencies of a non-prime attribute of a super key should be removed. For every functional dependency where X is functionally dependent on Y, X should be the super key of the table. No non-prime attributes dependent on the candidate key should be included. Every cell of a table should have a single value.arrow_forwardDescribe the differences in meaning between the terms relation and relation schema.arrow_forward
- A hybrid merge-join strategy should be developed for the circumstance when both relations are not physically sorted, but both contain an index on the attributes that are being merged.arrow_forwardWhat are three signs that a surrogate key should be generated for the primary key of a relation instead of using the main key?arrow_forwardDiscuss the differences between the candidate keys and the primary key of a relation.arrow_forward
- What are three indications that a surrogate key should be constructed for the primary key of a relation?arrow_forwardA candidate key is a characteristic that is part of a composite primary key.arrow_forwardProvide an example of a situation where partial dependency occurs and how it can be resolved through normalization.arrow_forward
- What are three reasons why the main key of a relation has to be replaced with a surrogate key?arrow_forwardWhat are three reasons why the main key of a relation need to be replaced with a surrogate key?arrow_forwardTransform the following EER diagram into relations and indicate the primary key and foreign keys for each relation.arrow_forward
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