Define the two principal integrity rules for the relational model. Discuss why it is desirable to enforce these rules.
What will be an ideal response?
Two rules are Entity Integrity and Referential Integrity
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Why did C++11 introduce the nullptr constant when we already have NULL?
What will be an ideal response?
What is the minimum number of nodes in a binary tree with L leaves?
a. log L b. 2L – 1 c. 2L d. 2^L e. none of the above
Answer the following statements true (T) or false (F)
1. Perception is the mental processes of perception, memory, judgment and reasoning. 2. An event is an observable occurrence. 3. Network-level QoS is concerned with the low-level network parameters such as service coverage, bandwidth, delay, throughput, and packet loss. 4. User demographics, usability, cost, content, and media quality are all key contributing factors to producing a good QoE. 5. The mean opinion score (MOS) is a standard metric for QoE.
Complete the program below by writing functions average and deviation. The program's purpose is to input a list of real numbers, compute their average, and display a table with each number and its deviation from the average. For example, if the data were 4.00, 12.00, 7.00, and 5.00 (average = 7.00), the deviation list would be -3.00, 5.00, 0.00, and -2.00.
#include#include using namespace std; double average( ); void deviation( ); const int MAX_SIZE = 20; int main() { double mean; double nums[MAX_SIZE]; double devFromMean[MAX_SIZE]; int numsSize; cout << "Enter the number of elements in the list => "; cin >> numsSize; cout << "Enter the elements of the list separated by a space => "; for (int i = 0; i < numsSize; ++i) cin >> nums[i]; mean = average( nums, numsSize ); cout << "The mean is " << mean << endl; deviation( devFromMean, nums, numsSize, mean ); for (int i = 0; i < numsSize; ++i) cout << setw( 10 ) << nums[i] << setw( 10 ) << devFromMean[i] << endl; return 0; } // Returns the average of the first n elements of list double average( ) // Fills each of the first n elements of devList with the deviation from // givenVal of the corresponding element of list. void deviation(