Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
Publisher: PEARSON
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Chapter 4, Problem 4.14RQ
Program Plan Intro
Importance of normalization that EER conversion leads to a normalized set of relations.
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What is the importance of normalization that EER conversion leads to a normalized set of relations.
Given that an EER discussion nearly always produces a
normalized set of relations, why normalize?
Use normalization to decompose a relation with anomalies into well-structured relations?
Chapter 4 Solutions
Modern Database Management
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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Similar questions
- Given that an EER discussion nearly always produces a normalised set of relations, why normalise?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
- Discuss the alternative ways that normalization can be used to support database design. How does normalization eradicate update anomalies from a relation?arrow_forwardWhat is a database table's definition of a "transitive dependency"? A non-key characteristic is dependant on another in order to operate. First usual form of a non-key attribute is B: C: There is a symbiotic relationship between a crucial quality and another. The initial normal form of one important quality is D.arrow_forwardSo 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_forward
- EER discussions typically normalise relationships, but why is normalisation important?arrow_forwardIn the database relation R(a, b, d, e, f) attribute b and d are dependent only on a; e only on d; and f only on d. Which of these sets of relations is equivalent to R in third normał form (3NF), if key attributes are underlined? A RI(a, b), R2(d, e,f), R3(a, d). B RI(a, b, d), R2(d, e), R3(e. f). C RI(a, b, d), R2(d, e), R3(e,f) D RI(a, b, d), R2(d, e,f).arrow_forwardWrite an SQL Assertion statement to enforce the functional dependency Title → Salary for the relation EMPLOYEE(EmpID, Name, DeptID, Title, Salary). You may assume that no tuple has null values. Discuss any potential issue with this table design.arrow_forward
- Should 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_forwarda) Split Composite attributes (where needed / if any)b) Identify the Functional dependenciesc) List down the keysd) Normalize up to BCNFarrow_forwardExplore the concept of Boyce-Codd Normal Form (BCNF) in database normalization. How does it differ from the third normal form (3NF)?arrow_forward
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