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 5, Problem 5.32RQ
Explanation of Solution
Representation of the recursive one-to-many relationship (1:N):
- Recursive one-to-many relationship is one of the types of recursive binary relationship that refers to the relationship between two entities which means one parent field or record can be associated with one or more child field or record in recursive manner.
- Let us consider the following example:
Explanation:
- In the below diagram, “Employee_ID” is a primary key and “Manager_ID” is a foreign key.
Difference between recursive one-to-one relationship and non-recursive one-to-one relationship:
| Recursive one-to-many relationship | Non-recursive one-to-many relationship |
| The “Employee” can be in post of “Manager” and a “Manager” can manage an employee... |
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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.
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5.
Determine the donor density in the n-side in unit of cm³
Answers within 5% error will be considered correct.
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6. Determine the depletion region width, z, in the n-side in unit of μm.
Answers within 5% error will be considered correct.
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7.
Determine the depletion region width, xp, in the p-side in unit of μm.
Answers within 5% error will be considered correct.
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8. Determine maximum electric field in unit of V/cm.
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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.
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3.
Find the built-in potential in unit of V.
Answers within 5% error will be considered correct.
Enter answer here
Many IT implementations are operated as projects. Project stakeholders are vital aspects of the project team. Describe a project that you have worked on and the roles of each member on the team, and then answer the following questions. If you have never been on a project, find one online and answer the following questions.
Why is it important to understand the role that each member plays on the team?
What organization structure was in place for the project?
Was the organizational structure optimal, and if so, why was it optimal?
If it was not optimal, what structure would have been the optimal structure and why?
Chapter 5 Solutions
Database Concepts (8th Edition)
Ch. 5 - Explain how entities are transformed into tables.Ch. 5 - Prob. 5.2RQCh. 5 - Prob. 5.3RQCh. 5 - What is denormalization?Ch. 5 - Prob. 5.5RQCh. 5 - Explain the problems that denormalized tables may...Ch. 5 - Explain how the representation of weak entities...Ch. 5 - Explain how supertype and subtype entities are...Ch. 5 - Prob. 5.9RQCh. 5 - Prob. 5.10RQ
Ch. 5 - Show two different ways to represent the 1:1...Ch. 5 - Prob. 5.12RQCh. 5 - Prob. 5.13RQCh. 5 - Prob. 5.14RQCh. 5 - Prob. 5.15RQCh. 5 - Prob. 5.16RQCh. 5 - For your answer to question 5.15, code an SQL...Ch. 5 - Prob. 5.18RQCh. 5 - Prob. 5.20RQCh. 5 - Prob. 5.21RQCh. 5 - Explain how the terms parent table and child table...Ch. 5 - For your answers to questions 5.20, 5.21, and...Ch. 5 - Prob. 5.24RQCh. 5 - Prob. 5.25RQCh. 5 - Prob. 5.26RQCh. 5 - Prob. 5.27RQCh. 5 - Prob. 5.28RQCh. 5 - Define the three types of recursive binary...Ch. 5 - Prob. 5.30RQCh. 5 - Prob. 5.31RQCh. 5 - Prob. 5.32RQCh. 5 - Prob. 5.33RQCh. 5 - Prob. 5.34RQCh. 5 - Code an SQL statement that creates a table with...
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