Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Expert Solution & Answer
Chapter 2, Problem 2.33RQ
Explanation of Solution
Determinant in following relation:
Assumption 1:
PetName → (PetType, PetBreed, PetDOB, OwnerLastName, OwnerFirstName, OwnerPhone, OwnerEmail)
In the above expression, PetName attribute determines PetType, PetBreed, PetDOB, OwnerLastName, OwnerFirstName, OwnerPhone, and OwnerEmail attributes, left term “PetName” refers the determinant, and “→” defines the relationship.
- That is, the PetType, PetBreed, PetDOB, OwnerLastName, OwnerFirstName, OwnerPhone, and OwnerEmail are functionally dependent on PetName.
Therefore, the “PetName” is the determinant for this assumption.
Assumption 2:
OwnerEmail → (OwnerLastName, OwnerFirstName, OwnerPhone)
In the above expression, OwnerEmail attribute determines OwnerLastName, OwnerFirstName, and OwnerPhone attributes, left term “OwnerEmail” refers the determinant, and “→” defines the relationship.
- That is, the OwnerLastName, OwnerFirstName, and OwnerPhone are functionally dependent on OwnerEmail.
Therefore, the “OwnerEmail” is the determinant for this assumption.
Assumption 3:
OwnerPhone → (OwnerLastName, OwnerFirstName, OwnerEmail)
In the above expression, OwnerPhone attribute determines OwnerLastName, OwnerFirstName, and OwnerEmail attributes, “OwnerPhone” refers the determinant, and “→” defines the relationship.
- That is, the OwnerLastName, OwnerFirstName, and OwnerEmail are functionally dependent on OwnerPhone...
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Chapter 2 Solutions
Database Concepts (7th Edition)
Ch. 2 - Prob. 2.1RQCh. 2 - Define the term entity, and give an example of an...Ch. 2 - Prob. 2.3RQCh. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - Prob. 2.7RQCh. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - Define the term unique key and give an example.
Ch. 2 - Prob. 2.11RQCh. 2 - Prob. 2.12RQCh. 2 - Prob. 2.13RQCh. 2 - Describe four uses of a primary key.Ch. 2 - Prob. 2.15RQCh. 2 - Prob. 2.16RQCh. 2 - Prob. 2.17RQCh. 2 - Explain the term foreign key, and give an example.Ch. 2 - Prob. 2.19RQCh. 2 - Prob. 2.20RQCh. 2 - Explain three possible interpretations of a null...Ch. 2 - Give an example of a null value (other than one...Ch. 2 - Prob. 2.23RQCh. 2 - Prob. 2.24RQCh. 2 - Prob. 2.25RQCh. 2 - Prob. 2.26RQCh. 2 - Prob. 2.27RQCh. 2 - Define the term primary key in terms of functional...Ch. 2 - Prob. 2.31RQCh. 2 - Examine the data in the Veterinary Office...Ch. 2 - Prob. 2.33RQCh. 2 - Describe a modification problem that occurs when...Ch. 2 - Prob. 2.35RQCh. 2 - Prob. 2.36RQCh. 2 - Prob. 2.37RQCh. 2 - Apply the normalization process to the Veterinary...Ch. 2 - Prob. 2.39ECh. 2 - Prob. 2.40E
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