Answer:
Explanation:
Duplicate tuples are not allowed in a relation because the specifications of the constraints of the regional integrity are violated, especially the main constraint that states that there can be no identical values for the attributes of two tuples at any database relation state.
Also, duplicate tuples are not allowed in a relation due to the fact that they lead to redundancy of the data base which in turn, slowing down the speed of the database when data processing such as inserting, querying, updating, deleting, etc are being performed.
Is that a essay ur supposed to write
See it's option C because 3-D visualising means creating graphical content in computers now if we are creating it in computer means we are working with software so option C is correct there.
itemCost = input("Enter cost of items: ")
totalCost = 15 * float(itemCost)
print(totalCost)
The first line gets the total cost of the item from the user. The second line calculates the cost of 15 of those items and stores that value in the variable totalCost. The last line is just to test that our calculation works. I hope this helps!
import java.util.Scanner;
public class JavaApplication86 {
public static void main(String[] args) {
Scanner scan = new Scanner(System.in);
int x = 0, c = 0, sum = 0;
while (true){
x = scan.nextInt();
System.out.println("You entered: "+x);
if (x == -1){
break;
}
sum += x;
c++;
}
System.out.println("The sum is "+sum);
System.out.println("You entered "+c +" numbers");
}
}
This works for me. Instead of subtracting one from c and adding one to sum, I used an if statement to break away from the while loop if the entered number is -1.
