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3 years ago

Explain what middleware is. Name a common middleware in two-tier client/server architecture for database applications.

1 answer:

7 0

Answer: Middleware is a program that acts as the middle connection for a client and server .It helps the client and server to connect with each other for sending the request, communication, etc. Middleware is designed in such a way that the functioning does not gets noticed by the client and server.

Example- Two-tier architecture of the client and server for database application can be the train ticket reservation. The reservation made by a people will be according to the time , the person who gets chance to access the reservation first will get the ticket while others wait in queue.

If any query regarding the reservation according to the database occurs then Java Database connectivity (JDBC) will act as the middleware for the Java data collection between the application(client section) and database (server).

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In a certain computer program, two positive integers are added together, resulting in an overflow error. Which of the following

Airida [17]

The option that best explains why the error occurs is that The program can only use a fixed number of bits to represent integers; the computed sum is greater than the maximum representable value.

<h3>Can programs represent integers?</h3>

An integer value is known to be often listed out in the source code of a program in a way called a sequence of digits that is said to be optionally prefixed with + or −. Note that some programming languages do use other notations, like hexadecimal.

Computers are known to use a a fixed number of bits to show an integer. The most -used bit-lengths for integers are known to be 8-bit, 16-bit, 32-bit or 64-bit.

Learn more about errors from

brainly.com/question/11472659

8 0

2 years ago

All websites with medical information should be considered credible.

larisa [96]

No, this is not true. WebMD is a great example asking you of simple symptoms that you may be facing and your results could present an apparent fatal disease. This constantly scares the population of netizens whenever they would want a quick diagnosis online through these medical information sites. The best solution to your symptoms is to visit your family doctor or a licensed physician who will give you proper diagnosis checking your vital signs and other related information. Do not always trust the internet and the information it gives you as a user you must take the information with discretion before reacting inappropriately.

3 0

3 years ago

Read 2 more answers

During the design phase of the systems development life cycle (SDLC), the _____ design is created for a specific platform, such

Firlakuza [10]

Answer:

The answer is "physical design"

Explanation:

This design is the method of translating the specification of circuits into a physical design that explains how cells and roads connect. It is an architecture, that involves the system's internal processes of input and output.

This system is created by establishing the design criteria, which determines basically what the applicant system is doing.
It includes the architecture, process architecture and software design of user interfaces.

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

import java.util.Scanner;

import java.util.Arrays;

The class of the program

public class Main {

The main method begins here

public static void main(String args[]) {

The scanner function is called in the program

Scanner input = new Scanner(System.in);

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

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

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

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

} }

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

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

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

if(Array2D[i][j] > max){

maxitem[0] = i; -- The row position is saved in index 0

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

This returns the 1 d array

return maxitem;

}

7 0

3 years ago

Which term describes the distinct number of colors a graphic contains? (1 point)?

laila [671]

Your answer would be "Hue".

4 0

3 years ago