Modern Database Management
13th Edition
ISBN: 9780134773650
Author: Hoffer
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 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?
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
- 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 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_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_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_forward
- Explain operations on classical relations.arrow_forwarda) Split Composite attributes (where needed / if any)b) Identify the Functional dependenciesc) List down the keysd) Normalize up to BCNFarrow_forwardwhat is relational model representation of ER/EER model? A)student(studentno,name,firstname,midinitials,lastname,phone) Primary key: studentno B)student(studentno,name,phone) Primary key: studentno C)student(studentno,name,firstname,lastname,phone) Primary key: studentno D)student(studentno,fistname,lastname,phone) Primary key: studentnoarrow_forward
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