Database Concepts (7th Edition)
7th Edition
ISBN: 9780133544626
Author: David M. Kroenke, David J. Auer
Publisher: PEARSON
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Textbook Question
Chapter 5, Problem 5.22RQ
Explain how the terms parent table and child table relate to the tables in your answer to question 5.20.
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Students have asked these similar questions
You have the following tables:
APARTMENTS (ADDRESS, CITY, STATE, RENTER_ID, RENTER_LAST_NAME)
RENTERS (RENTER_ID, FIRST_NAME, LAST_NAME)
What is the primary key for the APARTMENTS table? (It may be a composite key involving 2 or more fields) What are the foreign keys, if any?
What is the primary key for the RENTERS table? What are the foreign keys, if any?
What field in RENTERS can be eliminated so that the RENTERS table is normalized?
Some rows of the STUDENT table are shown below:
CODE
NAME
GPA
YEAR
291
ALEX
3.1
2
938
MICHELE
2.3
1
931
JHON
3.3
1
182
JOE
3.4
2
190
REY
2.0
2
330
RON
3.9
3
Which best describes the result of the query below?
SELECT YEAR, AVG(GPA) FROM STUDENT WHERE GPA > 2.0 GROUP BY YEAR
a.
The average maximum GPA of all the students in each year.
b.
The year of the student with the maximum GPA.
c.
The average GPA of students with a GPA higher than 2.0 each year.
d.
The average GPA of the students with a GPA higher than 2.0.
List the names of all Staff members who hold a faculty position and have a salary of $45,000 or less. Show their names as their first name, followed by a space, and then their last name but sort the list alphabetically by last name and then first name. Hint: Check out the Position column in the Staff table.
All staff members who do not hold a faculty position will get a bonus this year equal to 5% of their salary. List the names, current salary, and bonus amount for each Staff member (non-faculty) who is due a bonus. Show your list in order with the person receiving the highest bonus first.
Chapter 5 Solutions
Database Concepts (7th 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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