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Soloha48 [4]
1 year ago
13

Which of the following is a key feature of a relational database?

Computers and Technology
1 answer:
Mekhanik [1.2K]1 year ago
3 0

It uses primary keys and foreign keys as a means to provide efficient access to data and is supported directly in the database rather than maintained in the application code.

Explanation: Relational databases use an expressive query language, make efficient use of indexes within the database, ensure strong consistency, and fit well within an enterprise management system. Non-relational databases have a flexible data model, have high scalability, and performance, and have always-on global deployments.

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Write a program num2rome.cpp that converts a positive integer into the Roman number system. The Roman number system has digits I
Tom [10]

Answer:

Explanation:

#include <stdio.h>  

int main(void)  

{    

   int num, rem;

   printf("Enter a number: ");

   scanf("%d", &num);

   printf("Roman numerals: ");        

   while(num != 0)

   {

       if (num >= 1000)       // 1000 - m

       {

          printf("m");

          num -= 1000;

       }

       else if (num >= 900)   // 900 -  cm

       {

          printf("cm");

          num -= 900;

       }        

       else if (num >= 500)   // 500 - d

       {            

          printf("d");

          num -= 500;

       }

       else if (num >= 400)   // 400 -  cd

       {

          printf("cd");

          num -= 400;

       }

       else if (num >= 100)   // 100 - c

       {

          printf("c");

          num -= 100;                        

       }

       else if (num >= 90)    // 90 - xc

       {

          printf("xc");

          num -= 90;                                              

       }

       else if (num >= 50)    // 50 - l

       {

          printf("l");

          num -= 50;                                                                      

       }

       else if (num >= 40)    // 40 - xl

       {

          printf("xl");            

          num -= 40;

       }

       else if (num >= 10)    // 10 - x

       {

          printf("x");

          num -= 10;            

       }

       else if (num >= 9)     // 9 - ix

       {

          printf("ix");

          num -= 9;                          

       }

       else if (num >= 5)     // 5 - v

       {

          printf("v");

          num -= 5;                                      

       }

       else if (num >= 4)     // 4 - iv

       {

          printf("iv");

          num -= 4;                                                            

       }

       else if (num >= 1)     // 1 - i

       {

          printf("i");

          num -= 1;                                                                                    

       }

   }

   return 0;

}

8 0
2 years ago
I recorded a video on my windows PC, but when i tried to play it i got this message:
Anit [1.1K]

Answer:

yes. Look up popular video repair sites and download it (unless its online) but dont just go clicking on random things you dont want to give yourself a virus XD

Explanation:

7 0
2 years ago
Read 2 more answers
Which devices typically generate computer output ?
Andrews [41]
Monitor , printer , speaker , projector , keyboard etc
6 0
3 years ago
Read 2 more answers
Here is the header for a function named computeValue:
zhuklara [117]

Answer:

B) computeValue(10);

Explanation:

Given

Header: void computeValue(int value)

Required

Determine the valid call

To call a function from another function or from the main, the following syntax has to be used.

<em>function-name(parameter-1, parameter-2, parameter-3,.....,parameter-n);</em>

<em />

In the function header given:, the following can be observed:

  • The function name is computeValue
  • It has only one parameter and it is of type integer

So, to call the function; we make use of computeValue(10);

Where 10 represents the value of the parameter (i.e. argument)

7 0
2 years ago
Which is a benefit of owning a desktop computer instead of a laptop?
Setler79 [48]
B) a desktop is less likely to be stolen or damaged
4 0
3 years ago
Read 2 more answers
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