3. 4. 5. ProjectID, EmployeeName Are all the nonkey attributes (if any) dependent on the primary key? Describe two modification anomalies that affect PROJECT. 6. Is ProjectID a determinant? If so, based on which functional dependencies in part A? 7. Is EmployeeName a determinant? If so, based on which functional dependencies in part A? 9. 8. Is (ProjectID, EmployeeName) a determinant? If so, based on which functional dependencies in part A? 10. In what normal form is PROJECT? 11. Is EmployeeSalary a determinant? If so, based on which functional dependencies in part A? Does this relation contain a transitive dependency? If so, what is it? Redesign the relation to eliminate modification anomalies. R
3. 4. 5. ProjectID, EmployeeName Are all the nonkey attributes (if any) dependent on the primary key? Describe two modification anomalies that affect PROJECT. 6. Is ProjectID a determinant? If so, based on which functional dependencies in part A? 7. Is EmployeeName a determinant? If so, based on which functional dependencies in part A? 9. 8. Is (ProjectID, EmployeeName) a determinant? If so, based on which functional dependencies in part A? 10. In what normal form is PROJECT? 11. Is EmployeeSalary a determinant? If so, based on which functional dependencies in part A? Does this relation contain a transitive dependency? If so, what is it? Redesign the relation to eliminate modification anomalies. R
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
Related questions
Question
Regional Labs is a company that conducts research and development work on a contract basis for other companies and organizations. The table below shows data that Regional Labs collects about projects and the employees assigned to them.
This data is stored in a relation (table) named PROJECT:
PROJECT(ProjectID, EmployeeName, EmployeeSalary)
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1. Assuming that all functional dependencies are apparent in this data, which of the following are true?
1. ProjectID → Employee Name
False
2. ProjectID → EmployeeSalary
False
3. (ProjectID, EmployeeName) → EmployeeSalary
4. EmployeeName → EmployeeSalary
5. EmployeeSalary → ProjectID
False
6. EmployeeSalary → (ProjectID, EmployeeName) False
What is the primary key of PROJECT?
ProjectID, Employee Name
Are all the nonkey attributes (if any) dependent on the primary key?
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EmployeeName Employee Salary
64,000.00
70,000.00
70,000.00
64,000.00
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Describe two modification anomalies that affect PROJECT.
6. Is ProjectID a determinant? If so, based on which functional dependencies in part A?
Is EmployeeName a determinant? If so, based on which functional dependencies
in part A?
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ProjectID, Employee Name
Are all the nonkey attributes (if any) dependent on the primary key?
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8. Is (ProjectID, EmployeeName) a determinant? If so, based on which functional dependencies in
part A?
Is EmployeeSalary a determinant? If so, based on which functional dependencies in part A?
Does this relation contain a transitive dependency? If so, what is it?
Redesign the relation to eliminate modification anomalies.
Q Search
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