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Nonamiya [84]
3 years ago
10

Give your definition of a view. Based on the Academic Database, identify and describe a scenario where it would be necessary to

use a view. Your answer should be addressed in 100 to 150 words.
Computers and Technology
1 answer:
il63 [147K]3 years ago
7 0

Answer:

A database view is a searchable object in a database that is defined by a query. Though a view doesn't store data, some refer to a views as “virtual tables,” you can query a view like you can a table. A view can combine data from two or more table, using joins, and also just contain a subset of information.

Explanation:

A database view is a subset of a database that is based on a query that runs on one or more database tables. Database views are saved in the database as named queries and can be used to save complete queries that are frequently used.

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Write a C++ Programm in which inheritance is used
geniusboy [140]

Answer:

// C++ program to demonstrate inheritance

#include <iostream>

using namespace std;

// base class

class Animal {

  public:

   void eat() {

       cout << "I can eat!" << endl;

   }

   void sleep() {

       cout << "I can sleep!" << endl;

   }

};

// derived class

class Dog : public Animal {

  public:

   void bark() {

       cout << "I can bark! Woof woof!!" << endl;

   }

};

int main() {

   // Create object of the Dog class

   Dog dog1;

   // Calling members of the base class

   dog1.eat();

   dog1.sleep();

   // Calling member of the derived class

   dog1.bark();

   return 0;

}

8 0
3 years ago
The ____ provides access to the Internet may also be internal.
dmitriy555 [2]
Local area network (LAN)
7 0
3 years ago
Read 2 more answers
Match the different sources of payments to their descriptions. an electronic device that aids consumers to make online payments
LekaFEV [45]

<u>Automatic Draft-</u> A convenient payment method where funds are automatically debited from your account.

<u>Cash-</u> The physical form of currency.

<u>Credit Card-</u> Allows you to make a purchase and pay for it later.

<u>Digital Wallet-</u> An electronic device that aids consumers to make online payments through various websites.

For anyone still looking, hope this helps.

6 0
3 years ago
The return value is a one-dimensional array that contains two elements. These two elements indicate the rows and column indices
erma4kov [3.2K]

Answer:

In Java:

import java.util.Scanner;  

import java.util.Arrays;  

public class Main  {  

public static void main(String args[])  {  

Scanner input = new Scanner(System.in);

int row, col;  

System.out.print("Rows: ");    row = input.nextInt();

System.out.print("Cols: ");     col = input.nextInt();  

int[][] Array2D = new int[row][col];

System.out.print("Enter array elements: ");

for(int i =0;i<row;i++){    

    for(int j =0;j<col;j++){

        Array2D[i][j] = input.nextInt();  

    }     }

 

int[] maxarray = findmax(Array2D,row,col);

System.out.println("Row: "+(maxarray[0]+1));

System.out.println("Column: "+(maxarray[1]+1));

}  

public static int[] findmax(int[][] Array2D,int row, int col)   {  

int max = Array2D[0][0];

int []maxitem = new int [2];

for(int i =0;i<row;i++){

    for(int j =0;j<col;j++){

        if(Array2D[i][j] > max){  

            maxitem[0] = i;

            maxitem[1] = j; } }    }

 

return maxitem;  

}  

}

Explanation:

The next two lines import the scanner and array libraries

<em>import java.util.Scanner;   </em>

<em>import java.util.Arrays;   </em>

The class of the program

<em>public class Main  {  </em>

The main method begins here

<em>public static void main(String args[])  {  </em>

The scanner function is called in the program

<em>Scanner input = new Scanner(System.in);</em>

This declares the array row and column

int row, col;

This next instructions prompt the user for rows and get the row input  

System.out.print("Rows: ");    row = input.nextInt();

This next instructions prompt the user for columns and get the column input  

System.out.print("Cols: ");     col = input.nextInt();  

This declares the 2D array

int[][] Array2D = new int[row][col];

This prompts the user for array elements

System.out.print("Enter array elements: ");

The following iteration populates the 2D array

<em> for(int i =0;i<row;i++){    </em>

<em>     for(int j =0;j<col;j++){ </em>

<em>         Array2D[i][j] = input.nextInt();   </em>

<em>     }     } </em>

This calls the findmax function. The returned array of the function is saved in maxarray  

int[] maxarray = findmax(Array2D,row,col);

This prints the row position

System.out.println("Row: "+(maxarray[0]+1));

This prints the column position

System.out.println("Column: "+(maxarray[1]+1));

The main method ends here

}  

The findmax function begins here

public static int[] findmax(int[][] Array2D,int row, int col)   {  

This initializes the maximum to the first element of the array

int max = Array2D[0][0];

This declares maxitem. The array gets the position of the maximum element

int []maxitem = new int [2];

The following iteration gets the position of the maximum element

<em>for(int i =0;i<row;i++){ </em>

<em>     for(int j =0;j<col;j++){ </em>

<em>         if(Array2D[i][j] > max){  </em>

<em>             maxitem[0] = i; </em><em>-- The row position is saved in index 0</em><em> </em>

<em>             maxitem[1] = j;  </em><em>-- The column position is saved in index 1</em><em>} }    } </em>

This returns the 1 d array

return maxitem;  

}  

7 0
3 years ago
What is the simplest way to permanently get rid of an unwanted file? A. Go to the Start menu and then delete the file. B. Erase
vazorg [7]

C. Send it to the recycle bin and empty the recycle bin
7 0
3 years ago
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