EBK DATABASE SYSTEMS: DESIGN, IMPLEMENT
12th Edition
ISBN: 8220101450739
Author: Morris
Publisher: YUZU
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Chapter 9, Problem 5RQ
Explanation of Solution
Distinction between the centralized and decentralized conceptual
- Centralized and decentralized designs greatly vary based on the approach they use, the approach could be bottom up and top down approach.
The following are the difference between the centralized and decentralized conceptual database design:
| Centralized database design | Decentralized database design |
| This type of database design is suited for small organization. | This type of database design is well suited for the organizations whose operations are spread at multiple operational sites. |
| They have relatively small and simple databases with entire view can be identified easily. | They have database which contains multiple entities that are subjected to have a complex relations between them... |
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7. Character AnalysisIf you have downloaded the source code you will find a file named text.txt in the Chapter 08 folder. Write a program that reads the file’s contents and determines the following:
The number of uppercase letters in the file
The number of lowercase letters in the file
The number of digits in the file
The number of whitespace characters in the file
Provide the full blue terminal commands & output and other things that are useful
Homework
You have the row vector (A) that has values from (-100 to 100),
write MATLAB codes to:
(1) Interchange the first 10 elements with last ten elements.
(2) Replace the elements at indices (93,9,17,50) of A with 99.
(3) Return the second element and the element before the last
of A as a column vector (C1).
(4) Extract the first five elements and the last five elements of A
and append them as a row vector (R).
(5) Set the elements of A with odd indices to zeros(0).
Chapter 9 Solutions
EBK DATABASE SYSTEMS: DESIGN, IMPLEMENT
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