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 4.3RQ
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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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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- Contrast the terms partial dependency; transitive dependency?arrow_forwardIn a composite primary key, a prospective key is a prospective characteristic.arrow_forwardDeepClean StaffID ContractNo HoursPerWeek StaffName OfficeNo OfficeLocation 101 C90 16 Anne O25 Ampang 102 C90 24 Rita O25 Ampang 103 C91 28 Mandy O7 Kg Baru 101 C91 16 Anne O7 Kg Baru 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).arrow_forward
- Multivalued dependencies are avoided in relation schema when the relation schema conforms to –(a) 1NF(b) BCNF(c) 3NF(d) 4NFarrow_forwardThree instances in which a surrogate key should be constructed for the relation's primary keyarrow_forward1. Describe entity constraint in your own words 2. what type of key satisfies the uniqueness property but not the minimality property?arrow_forward
- What are three signs that a surrogate key should be generated for the primary key of a relation instead of using the main key?arrow_forwardThe use of composite attributes are avoided in relation schema when the relation schema conforms to –(a) 1NF(b) BCNF(c) 3NF(d) 4NFarrow_forwardHow does the primary key of a relation relate to the interdependencies of its characteristics from a functional standpoint?arrow_forward
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