Database Systems: Design, Implementation, & Management
12th Edition
ISBN: 9781305627482
Author: Carlos Coronel, Steven Morris
Publisher: Cengage Learning
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Chapter 14, Problem 17RQ
Program Plan Intro
Scaling out:
- Scaling out is also known as Distributed
programming . - It usually distributes jobs across machines over the network.
- It involves improving storage and processing capabilities with the use of more servers.
- The different patterns associated with this model are Master/Worker, Tuple Spaces, BlackBoard, and Map/Reduce.
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How can predictive and prescriptive modeling be used to measure operational performance in real-time? Do you see any potential downsides to this application? Can you provide an example?
Tracing the Recursion.
Tracing the Recursion. Observe the recursive solution provided below.
1. Which line(s) of this program define(s) the base case of sumOfDigits() method?
2. Which line(s) of this program include recursive call(s)?
3. Trace the recursion below. You must show the trace step by step; otherwise – little
to no credit!
4. Show me the final result!
1 public class SumOfDigitsCalculator {
30
123456
7%
8
public static void main(String[] args) {
System.out.println(sumOfDigits(1234));
}
public static int sumOfDigits (int number) {
if (number == 0)
9
10
11
12
}
13 }
else
return 0;
return number % 10 + sumOfDigits (number / 10);
Chapter 14 Solutions
Database Systems: Design, Implementation, & Management
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