Answered: person ID пате address emplayee student…

person ID пате address emplayee student salary tol_credits instructor secretary rank hours_per_week Figure 8.9 Specialization and generalization.

Principles of Information Systems (MindTap Course List)

13th Edition

ISBN:9781305971776

Author:Ralph Stair, George Reynolds

Publisher:Ralph Stair, George Reynolds

Chapter10: Knowledge Management And Specialized Information Systems

Section: Chapter Questions

Problem 3RQ

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Question

Consider the E-R diagram in Figure 8.9, which contains specializations, using
subtypes and subtables.
a. Give an SQL schema definition of the E-R diagram.
b. Give an SQL query to find the names of all people who are not secretaries.
c. Give an SQL query to print the names of people who are neither employees
nor students.
d. Can you create a person who is an employee and a student with the
schema you created? Explain how, or explain why it is not possible.

person
ID
пате
address
emplayee
student
salary
tol_credits
instructor
secretary
rank
hours_per_week
Figure 8.9 Specialization and generalization.

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