This question is based on the following relation and sample data, where Employee Social Security Number is the Primary Key:   Employee Social Security Number Employee Family Name Department Number Department Name Department Extension 123 Smith 5 Research 2800 333 Wong 5 Research 2800 999 Zelaya 4 Admin 2801 987 Wallace 4 Admin 2801 888 Borg 1 HQ 2799   Identify the direct functional dependencies in the relation above. You should assume the sample data is representative. In what normal form is the relation? You must justify your answer by explaining why the relation is in the normal form you are claiming. Using the relation above, give an example of a deletion anomaly that may occur. Convert the relation into a set of relations in at least Third Normal Form, clearly indicating the primary and foreign keys

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
icon
Related questions
Question

This question is based on the following relation and sample data, where Employee Social Security Number is the Primary Key:

 

Employee Social Security Number

Employee Family Name

Department Number

Department Name

Department Extension

123

Smith

5

Research

2800

333

Wong

5

Research

2800

999

Zelaya

4

Admin

2801

987

Wallace

4

Admin

2801

888

Borg

1

HQ

2799

 

  1. Identify the direct functional dependencies in the relation above. You should assume the sample data is representative.
  2. In what normal form is the relation? You must justify your answer by explaining why the relation is in the normal form you are claiming.
  • Using the relation above, give an example of a deletion anomaly that may occur.

Convert the relation into a set of relations in at least Third Normal Form, clearly indicating the primary and foreign keys

Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Normalization
Learn more about
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
  • SEE MORE QUESTIONS
Recommended textbooks for you
Database System Concepts
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
Starting Out with Python (4th Edition)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
Digital Fundamentals (11th Edition)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
C How to Program (8th Edition)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
Database Systems: Design, Implementation, & Manag…
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
Programmable Logic Controllers
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education