Database Concepts (8th Edition)
8th Edition
ISBN: 9780134601533
Author: David M. Kroenke, David J. Auer, Scott L. Vandenberg, Robert C. Yoder
Publisher: PEARSON
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Chapter 4, Problem 4.17RQ
Explanation of Solution
IE Crow’s Foot E-R diagram:
IE is information engineering and it uses crow’s feet to denote many side of relationship. Hence it is referred as IE Crow’s feet ER diagram.
IE Crow’s Foot E-R diagram for the entities DEPARTMENT and EMPLOYEE:
Explanation:
- The “Department” entity contains an attributes of “Dep_Name”, “Dep_ID”, and “Dep_Location”...
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4.
Use this information to answer Question 4-8:
Consider a step pn junction made of GaAs at T = 300 K. At zero bias, only 20% of the total depletion region
width is in the p-side. The built-in potential o₂ = 1.20 V.
Determine the acceptor density in the p-side in unit of cm³.
Answers within 5% error will be considered correct.
Enter answer here
5.
Determine the donor density in the n-side in unit of cm³
Answers within 5% error will be considered correct.
Enter answer here
6. Determine the depletion region width, z, in the n-side in unit of μm.
Answers within 5% error will be considered correct.
Enter answer here
7.
Determine the depletion region width, xp, in the p-side in unit of μm.
Answers within 5% error will be considered correct.
Enter answer here
8. Determine maximum electric field in unit of V/cm.
Answers within 5% error will be considered correct.
Enter answer here
1.
Use this information to answer Question 1-3:
Consider a step pn junction made of silicon. The p- and n-sides are doped such that Ec - EF = 0.21 eV
on the n-side and EF – Ey = 0.18 eV on the p-side. The pn junction is under zero bias and kept at
T = 300 K.
Find the doping density in the n-side in unit of cm -3.
Answers within 5% error will be considered correct.
Enter answer here
2.
Find the doping density in the p-side in unit of cm
-3
Answers within 5% error will be considered correct.
Enter answer here
3.
Find the built-in potential in unit of V.
Answers within 5% error will be considered correct.
Enter answer here
Chapter 4 Solutions
Database Concepts (8th Edition)
Ch. 4 - Prob. 4.1RQCh. 4 - Prob. 4.2RQCh. 4 - Prob. 4.3RQCh. 4 - What is a use case, and what is its purpose?Ch. 4 - Give an example of a data constraint.Ch. 4 - Prob. 4.6RQCh. 4 - Define the term entity, and give an example other...Ch. 4 - Explain the difference between an entity class and...Ch. 4 - Define the term attribute, and give examples for...Ch. 4 - Define the term identifier, and indicate which...
Ch. 4 - Prob. 4.11RQCh. 4 - Prob. 4.12RQCh. 4 - Prob. 4.13RQCh. 4 - Prob. 4.14RQCh. 4 - List and give an example of the three types of...Ch. 4 - Prob. 4.16RQCh. 4 - Prob. 4.17RQCh. 4 - Prob. 4.18RQCh. 4 - Define the term weak entity, and give an example...Ch. 4 - Explain the ambiguity in the definition of the...Ch. 4 - Define the term associative entity, and give an...Ch. 4 - Define the terms supertype, subtype, and...Ch. 4 - What is an exclusive subtype relationship? Give an...Ch. 4 - What is an inclusive subtype relationship? Give an...Ch. 4 - Prob. 4.25RQCh. 4 - Prob. 4.26RQCh. 4 - Prob. 4.27RQCh. 4 - Prob. 4.28RQ
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