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Drupady [299]
3 years ago
11

Which describes a composite primary key? Check all that apply.

Computers and Technology
1 answer:
Gemiola [76]3 years ago
4 0
A composite primary key applies to more than one field.  <span>A table can have only one primary key, which may consist of single or multiple fields.</span>
A composite primary key is selected from Design view.  <span>In Design </span>view<span>, you can use the </span>Primary Key<span> button to assign or remove the </span>primary key<span> designation for the </span>selected<span> field or fields.</span>
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Use the variables k, d, and s so that they can read three different values from standard input--an integer, a double, and a stri
Nat2105 [25]

Answer:

The c++ program to implement the given scenario is shown below.

#include <iostream>

using namespace std;

int main() {

   // variables declared as mentioned

   int k;

   double d;

   string s;

   cout << " Enter an integer value, a double value, a string value in the mentioned order " << endl;

   cin >> k >> d >> s;

   // variables printed in reverse order

   cout << " Reverse order " << endl;

   cout << s << " " << d << " " << k << endl;

   // variables printed in original order

   cout << " Original order " << endl;

   cout << k << " " << d << " " << s << endl;

   return 0;

}

OUTPUT

Enter an integer value, a double value, a string value in the mentioned order  

12 45.67 brainly

Reverse order  

brainly 45.67 12

Original order  

12 45.67 brainly

Explanation:

1. All the variables are declared as mentioned in the question.

int k;

   double d;

   string s;

2. The user is prompted to enter values for integer, double and string variables respectively. The input is accepted in the order mentioned above.

cin >> k >> d >> s;

3. The input is accepted in a single line since this is mentioned in the scenario that variables should be printed in the order in which they are read.

4. These variables are displayed to the standard output in reverse order – string, double, integer. The variables are displayed with exactly one space in between them.

cout << s << " " << d << " " << k << endl;

5. Then, variables are displayed in the original order – integer, double, string. The variables are displayed with exactly one space in between them.

cout << k << " " << d << " " << s << endl;

7 0
3 years ago
Write pseudocode for washing a car using at least five steps.
Travka [436]

Answer:

#include <iostream>

int main()

{

bool carWashed{ 0 };

bool washCar{ 0 };

while(carWashed == 0)

{

 washCar();

}

if(washCar == 1)

{

carWashed{ 1 }

}

}

Explanation:

c++

5 0
3 years ago
Consider a hard disk with the following specifications :<br> 3.5 in diameter
AnnyKZ [126]

Answer:

usable capacity = 10 GB

Number of cylinders = 256

Block size = 4 KB

(1)Bytes in each cylinder = (10*230)/(256) = (10*222) = 40 MegaBytes

(2)Number of Blocks in each cylinder = (10*222)/(212) = 10K

(3)capacity of one track = 40 MegaBytes/(10*2) = 2 MB

Rotation speed = 3840 RPM

Number of rotations per second = 3840/60 = 64

Transfer rate = (2*64) = 128 MB/sec

Explanation:

6 0
3 years ago
New evidence can lead to a change in scientific knowledge.<br><br> A. True<br> B.False
lidiya [134]

ιт ιѕ (α.) тяυє ιf уσυ fιи∂ иєω киσωℓєgє σи ∂σмєтнιиg ιт ¢αи ¢нαиgє ѕ¢ιєи¢є

ℓιкє нσω тнєу υѕє∂ тσ вєℓινє тнє єαятн ωαѕ fℓαт,σя нσω тнє єαятн ωαѕ тнє ¢єитєя σf тнє υиινєяѕє

нσρє ι ¢συℓ∂ нєℓρ уσυ!!!!!!!!

3 0
3 years ago
Read 2 more answers
The quality of an image is compromised when, what are stretched ?​
german

Answer:

pixels

Explanation:

3 0
3 years ago
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