7. What is a partial dependency? With what normal form is it associated? 8. What three data anomalies are likely to be the result of data redundancy? How can such an 9. Define and discuss the concept of transitive dependency. 10. What is a surrogate key, and when should you use one?

7. What is a partial dependency? With what normal form is it associated? 8. What three data anomalies are likely to be the result of data redundancy? How can such an 9. Define and discuss the concept of transitive dependency. 10. What is a surrogate key, and when should you use one?

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Concept explainers

Normalization

Normalization is the process of eliminating redundancy in a database by organizing the data into several smaller tables. The large tables are normalized (converted) into smaller tables by using normalization rules, so that a database administrator can easily handle them. It also eliminates insertion, deletion, and update anomalies.

Question

a. Identity and discuss
b. Create a database whose tables are at least in 2NF, showing the dependency diagrar
c. Create a database whose tables are at least in 3NF, showing the dependency diagran
7. What is a partial dependency? With what normal form is it associated?
8. What three data anomalies are likely to be the result of data redundancy? How can such and
9. Define and discuss the concept of transitive dependency.
10. What is a surrogate key, and when should you use one?
11. Why is a table whose primary key consists of a single attribute automatically in 2NF wher
12. How would you describe a condition in which one attribute is dependent on another att
attribute is part of the primary key?
13. Suppose that someone tells you that an attribute that is part of a composite primary key is
How would you respond to that statement?
it in in
and thord
J
C
no transiti

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