EBK DATABASE CONCEPTS
7th Edition
ISBN: 9780133544886
Author: AUER
Publisher: PEARSON CUSTOM PUB.(CONSIGNMENT)
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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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Find the error:
daily_sales = [0.0, 0,0, 0.0, 0.0, 0.0, 0.0, 0.0]
days_of_week = ['Sunday', 'Monday', 'Tuesday',
'Wednesday', 'Thursday', 'Friday',
'Saturday']
for i in range(7):
daily_sales[i] = float(input('Enter the sales for ' \
+ days_of_week[i] + ': ')
I need help with this problem and an explanation of the solution for the image described below. (Introduction to Signals and Systems)
I need help with this problem and an explanation of the solution for the image described below. (Introduction to Signals and Systems)
Chapter 5 Solutions
EBK DATABASE CONCEPTS
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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