OCR Land is a theme park aimed at children and adults. Entrance tickets are sold online. An adult ticket to OCR Land costs £19.9

Answer:A SaaS platform entrusts the client company with the duty of providing applications online, as well as creating, hosting, and maintaining the product.

Explanation:

An example of Software as a Service (SaaS) is Salesforce, which provides business applications over the internet.

Software as a Service (SaaS) utilizes cloud technology to host web-based applications, allowing access to users via the internet without necessitating installation or maintenance of the application software. Users simply need an internet connection and a web browser to utilize the service.

Response:

refer to the explanation

Clarification:

Examine the SQL statement shown below:

SELECT c.CustomerName, e.LastName, s.ShipperName, p.ProductName, o.Quantity, od.OrderDate

FROM

Customers c, Employees e, Shippers s, Orders o, OrderDetails od, Products p

WHERE c.customerID = o.customerID AND

e.employeeID = o.employeeID AND

o.orderID = od.orderID AND

od.shipperID = s.shipperID AND

od.productID = p.productID;

The code relevant to the problem in question:

import java.util.Scanner;

public class Test {

   public static void main(String[] args) {

       double number;

       double squareRootOfNumber;

       String userInput = null;

       Scanner scanner = new Scanner(System.in);

       System.out.println("Please enter a number: ");

       userInput = scanner.next();

       number = Double.parseDouble(userInput);

       squareRootOfNumber = Math.sqrt(number);

       if (number < 0) {

           throw new ArithmeticException("Cannot compute the square root of a negative number");

       }

       System.out.format("The square root of the entered number is %.2f %n", squareRootOfNumber);

   }

}

The program will output:

Please enter a number:

-90

Exception in thread "main" java.lang.ArithmeticException: Cannot compute the square root of a negative number at com..ans.Test.main(Test.java:18)

Explanation:

The standard Java library function java.lang.Math.sqrt does not throw an ArithmeticException for negative arguments, hence there’s no need to enclose your code in a try/catch block.

Instead, we manually trigger ArithmeticException using the throw keyword:

throw new ArithmeticException("Cannot compute the square root of a negative number");

Answer:

//This method takes a parameter called myString of type String

public static boolean isEmailAddress (String myString){

//verifying if the @ character exists in the string

if (myString.indexOf("@")!= -1) {

  //ensuring that only a single instance of @ appears in the string

   if (myString.indexOf("@") == myString.lastIndexOf("@")) {

   //confirming absence of space characters

  if (myString.indexOf(" ") == -1) {

    //checking for the absence of newline characters in the string

    if (myString.indexOf("\n") == -1) {

      //checking for absence of tab characters in the string

      if (myString.indexOf("\t") == -1) {

          return true;

      }

    }

  }

}

}

 return false;

}

Explanation:

The method takes a string presumed to be an email address and verifies whether it is valid, returning true if it is valid and false otherwise. The method checks the following conditions:

->The presence of the "@" character

->Only one occurrence of "@" exists in the string

->No spaces present

->No newline characters present

->No tab characters present

Returning true only if all these conditions are met.