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3 years ago

What is the process of comparing data with a set of rules or values to find out if the data is correct?

Computers and Technology

2 answers:

mart [117]3 years ago

8 0

Code for this perpose exist

NARA [144]3 years ago

3 0

Answer:

Data validation

Explanation:

Data validation is a process of checking and ensuring how valid a data is by comparing it with a set of rules or values. In other words, data validation checks for the validity of data. A data is valid if it is meaningful and correct.

For example, in validating a phone number, one might want to make sure it does not contain any letter. A phone number cannot contain but pure numbers and a few signs such as + and -.

In validating the last name of a person, one might want to ensure that it does not contain special characters such as @, #, & and so on. It has to contain nothing but letters.

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TV show information can either keep track of the number of viewers per show or the name of a show. Information is kept in a file

Elza [17]

Answer:

See explaination for Program source code.

Explanation:

The program source code below.

#include <iostream>

#include <fstream>

#include <vector>

using namespace std;

class Show

{

private:

string title;

int viewers;

public:

Show()

{

this->title = "";

this->viewers = 0;

}

Show(string title, int viewers)

{

this->title = title;

this->viewers = viewers;

}

string getTitle(){ return this->title; }

int getViewers(){ return this->viewers; }

};

int main()

{

vector<Show> shows;

vector<string> titles;

vector<int> viewers;

ifstream inFile1("file1.txt");

ifstream inFile2("file2.txt");

string line1, line2;

if(!inFile1.is_open() || !inFile2.is_open())

{

cout << "Either of the files could not be found!\n";

exit(0);

}

getline(inFile1, line1);

if(line1.compare("Show") == 0)

{

while(getline(inFile1, line1))

{

titles.push_back(line1);

}

inFile1.close();

}

getline(inFile2, line2);

if(line2.compare("Viewer") == 0)

{

while(getline(inFile2, line2))

{

viewers.push_back(stod(line2));

}

inFile2.close();

}

for(int i = 0; i < titles.size(); i++)

{

shows.push_back(Show(titles[i], viewers[i]));

}

// display all the show details

cout << "\nALL SHOWS:\n----------\n";

for(Show show : shows)

{

cout << "Title: " << show.getTitle() << ", Number of viewers: " << show.getViewers() << endl;

}

cout << endl;

return 0;

}

See attachment for output

3 0

3 years ago

Design a class that has an array of floating-point numbers. The constructor should accept an integer argument and dynamically al

attashe74 [19]

Answer:

See explaination for the code

Explanation:

Here is the code

class NumberArray

{

private:

float *aptr; // Pointer to the array

int arraySize; // Holds the array size

float max,min,avg;

public:

NumberArray(int); // Constructor

~NumberArray(); // Destructor

int size() const // Returns the array size

{ return arraySize; }

void storeNumber(float num,int ele);

float retrieveNumber(int ele);

float getHighest();

float getLowest();

float getAverage();

};

//*******************************************************

// Constructor for IntArray class. Sets the size of the *

// array and allocates memory for it. *

//*******************************************************

NumberArray::NumberArray(int s)

{

arraySize = s;

aptr = new float [s];

for (int count = 0; count < arraySize; count++)

*(aptr + count) = 0;

}

//******************************************************

// Destructor for IntArray class. *

//******************************************************

NumberArray::~NumberArray()

{

if (arraySize > 0)

delete [] aptr;

}

void NumberArray::storeNumber(float num,int ele)

{

if(ele<arraySize)

*(aptr+ele)=num;

}

float NumberArray::retrieveNumber(int ele)

{

return *(aptr+ele);

}

float NumberArray::getHighest()

{

float high=*(aptr+0);

for(int i=1;i<arraySize;i++)

if(high<*(aptr+i))

high=*(aptr+i);

return high;

}

float NumberArray::getLowest()

{

float low=*(aptr+0);

for(int i=1;i<arraySize;i++)

if(low>*(aptr+i))

low=*(aptr+i);

return low;

}

float NumberArray:: getAverage()

{

float ag=0;

for(int i=1;i<arraySize;i++)

ag+=*(aptr+i);

ag=ag/arraySize;

return ag;

}

//Header file section

#include <iostream>

using namespace std;

int main()

{

const int SIZE = 10; // Array size

// Define an IntArray with 10 elements.

NumberArray table(SIZE);

//function call to store values

table.storeNumber(1,0);

table.storeNumber(3,1);

table.storeNumber(7,2);

table.storeNumber(2,3);

//display values

cout<<"Highest value:"<<table.getHighest()<<endl;

cout<<"Lowest Value:"<<table.getLowest()<<endl;

cout<<"Average:"<<table.getAverage()<<endl;

///pause system for a while

system("pause");

return 0;

}

6 0

3 years ago

In a proper webpage, which tag holds all of a webpages visble HTML

Furkat [3]

If I remember correctly, I believe it's <body></body>

6 0

3 years ago

Read 2 more answers

Create a trigger that prevents anychange(insert, update, or delete)to the grade attribute of the takesrelation that would change

Alchen [17]

Answer:

The trigger code is given below

create trigger F1_Del

after delete on Friend

for each row

when exists (select * from Friend

where ID1 = Old.ID2 and ID2 = Old.ID1)

begin

delete from Friend

where (ID1 = Old.ID2 and ID2 = Old.ID1);

end

create trigger F1_Insert

after insert on Friend

for each row

when not exists (select * from Friend

where ID1 = New.ID2 and ID2 = New.ID1)

begin

insert into Friend values (New.ID2, New.ID1);

end

5 0

3 years ago

Describe the objectives of e-commerce ?

AnnZ [28]

Answer: eCommerce is to reach the more and right customers at the right time so that more orders can be placed and in turns, high revenue can be generated.

Explanation:

5 0

3 years ago