Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Chapter 2, Problem 2.34RQ
Describe a modification problem that occurs when changing data in the relation in question 2.32 and a second modification problem that occurs when deleting data in this relation.
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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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Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Similar questions
- Create an unnormalized relation using student and class entities.arrow_forwardAn suitable hybrid merge-join technique should be created for the case when both relations are not physically sorted but both have an index on the attributes that are being merged.arrow_forwardNormalization functional dependencies have what characteristics?arrow_forward
- Explain the concept of functional dependencies and how they relate to normalization.arrow_forwardThe following functional dependencies describe a relation that is in 3NF.Book_ID -> Genre_ID, Genre_TypeGenre_ID -> Genre_Type True or False? Thanks.arrow_forwardWhat features do normalization procedures that use functional dependencies have?arrow_forward
- What three situations make it necessary to make a substitute key instead of the main key of a relation?arrow_forwardWhat is a well-structured relation?arrow_forwardGiven the relation R(A, B, C, D, E, F), the following functional dependencies exist: B --> C, DD --> F a) What normal form is the relation R in? b) Normalize relation R to 3NF. You only need to show the final relation schemasarrow_forward
- What are three advantages of using a surrogate key rather than the main key to access a relation instead?arrow_forward100. When the foreign key refers to a tuple which does not exists in subjected relation then the constraint violated is a. modify integrity b. referential integrity c. inferential integrity d. insert integrityarrow_forwardThe number of tuples in a relation is referred to asarrow_forward
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