QUESTION 9Translate in two ways each of these statements into logical expressions using predicates, quantifiers, and logical connectives. First, let the domain consist of the students in your class andsecond, let it consist of all people.Everyone in your class has a cellular phone.For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).v 3 (12pt)ттт Arialv T-= - E -Path:Words:0QUESTION 10Translate in two ways each of these statements into logical expressions using predicates, quantifiers, and logical connectives. First, let the domain consist of the students in your class andsecond, let it consist of all people.Somebody in your class has seen a foreign movie.For the toolbar, press ALT+F10 (PC) or ALT+FN+F10 (Mac).T T T Arial3 (12pt)E -E -lick Save and Submit to save and submit. Click Save All Answers to save all answers.

Given:- a) Everyone in your class has a cellular phone. b) Somebody in your class has seen a foreign…

Answered: QUESTION 9 Translate in two ways each…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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Question 11 Lets say that class Laptop has been implemented. In order to compare two laptops a compareTo method that is in the comparable interface should be implemented. Which one of the following is the correct header for the method compareTo being added to the Laptop class 1. public static int compareTo(Object o) 2. public int compareTo(Laptop o) 3. public boolean compareTo(Object o) 4. public int compareTo(Object o) O 1 O 2 O 3
in python language In this task, we’re going to be simulating an email message. Some of the logic hasbeen filled out for you in the email.py file.● Open the file called email.py.● Create a class definition for an Email which has four variables:has_been_read, email_contents, is_spam and from_address.● The constructor should initialise the sender’s email address.● The constructor should also initialise has_been_read and is_spam to false.● Create a function in this class called mark_as_read which should changehas_been_read to true.● Create a function in this class called mark_as_spam which should changeis_spam to true.● Create a list called inbox to store all emails (note that you can have a list ofobjects).● Then create the following methods:○ add_email - which takes in the contents and email address from thereceived email to make a new Email object.○ get_count - returns the number of messages in the store.○ get_email - returns the contents of an email in the list. For this, allowthe…
For the Point2D data type, create three static comparators: one that compares points based on their x, y, and distance from the centre, and the other two that compare points based on their respective coordinates. For the Point2D data type, create two non-static comparators: one that compares objects based on how far they are from a given point, and the other that compares objects based on how far they are from a given point polarly.
Hi, I am making a elevator simulation and I need help in making the passenger classes using polymorphism. Any help is appreciated. There are 4 types of passengers in the system:Standard: This is the most common type of passenger and has a request percentage of 70%. Standard passengers have no special requirements.VIP: This type of passenger has a request percentage of 10%. VIP passengers are given priority and are more likely to be picked up by express elevators.Freight: This type of passenger has a request percentage of 15%. Freight passengers have large items that need to be transported and are more likely to be picked up by freight elevators.Glass: This type of passenger has a request percentage of 5%. Glass passengers have fragile items that need to be transported and are more likely to be picked up by glass elevators. This is what I have so far // Passenger abstract classpublic abstract class Passenger { protected String type; protected int requestPercentage; public…
this is for a python class 9.12 LAB: Product class In main.py define the Product class that will manage product inventory. Product class has three attributes: a product code, the product's price, and the number count of product in inventory. Implement the following methods: A constructor with 3 parameters that sets all 3 attributes to the value in the 3 parameters set_code(self, code) - set the product code (i.e. SKU234) to parameter code get_code(self) - return the product code set_price(self, price) - set the price to parameter price get_price(self) - return the price set_count(self, count) - set the number of items in inventory to parameter count get_count(self) - return the count add_inventory(self, amt) - increase inventory by parameter amt sell_inventory(self, amt) - decrease inventory by parameter amt Ex. If a new Product object is created with code set to "Apple", price set to 0.40, and the count set to 3, the output is: Name: Apple Price: 0.40 Count: 3 Ex. If 10…
Instructor note: This lab is part of the assignment for this chapter. This lab uses two Java files, LabProgram.java and SimpleCar.java. The SimpleCar class has been developed and provided to you already. You don't need to change anything in that class. Your job is to use the SimpleCar class to complete the specified tasks in the main() method of LabProgram.java Given two integers that represent the miles to drive forward and the miles to drive in reverse as user inputs, create a SimpleCar object that performs the following operations: Drives input number of miles forward Drives input number of miles in reverse Honks the horn Reports car status The SimpleCar class is found in the file SimpleCar.java. Ex: If the input is: 100 4 the output is: beep beep Car has driven: 96 miles
Implement the following in the .NET Console App. Write the Bus class. A Bus has a length, a color, and a number of wheels. a. Implement data fields using auto-implemented Properies b. Include 3 constructors: default, the one that receives the Bus length, color and a number of wheels as input (utilize the Properties) and the Constructor that takes the Bus number (an integer) as input.
If you fly in economy class, then you can be promoted to businessclass, especially if you have a gold airline card for privateflights. If you do not have a gold card, you can "reset" fromflight if the plane is full or you are late for check-in. All thesethe conditions are shown in the diagram below. Note that all statements(operators) are numbered. You run 3 tests:Test 1 - Gold card holder upgraded to business classTest 2 - Passenger without gold card remains in economy classTest 3 - Passenger who was "thrown" off the flightWhat is the statement coverage of these three tests?A. 60%B. 70%C. 80%D. 90%
In this task, we’re going to be simulating an email message. ●Create a class definition for an Email.The initialiser takes in two arguments and stores them as instance-level variables:○from_address - the sender’s email address.○subject_line - the subject of the email.○email_contents-the content of the email.●In addition,the initialiser will create two more instance-level variables with defaultvalues:○has_been_read - initialised to False.○is_spam - initialised to False.●Create a function in this class called mark_as_read which should change has_been_read to true.●Create a function in this class called mark_as_spam which should change is_spam to true.●Create another class called "Inbox" to store all emails (note that you can have a list of objects). The initaliser doesn’t take any arguments, and only initialises an empty list. This list is where all of your Email objects will be stored.●Within the Inbox class, create the following methods:○add_email (self, from_address, subject_line,…
Using c++ programming language. Write a class Distance that holds distances or measurements expressed in feets and inches. Thisclass has two private data members: feet: An integer that holds the feet. inches: An integer that holds the inches. Write a constructor with default parameters that initializes each data member of the class.If inches are greater than equal to 12 then they must be appropriately converted tocorresponding feet. Generate appropriate getter-setter functions for the data members.o void setFeet(int f) and int getFeet()consto void setInches(int i) It should ensure proper conversion to feet.o int getInches() const Define an operator ‘+’ that overloads the standard ‘+’ math operator and allows oneDistance object to be added to another. Distance operator+ (const Distance &obj). Define an operator - function that overloads the standard ‘-‘ math operator and allowssubtracting one Distance object from another. Distance operator-(const Distance &obj)…
Which of the following cases is most like the strategy pattern? A. If you have an interface called Duck, and have many ducks that implement the duck interface. All of these ducks must have the behaviour “quack” but for some ducks, like a Mallard, this must result in a quack, where for a rubber duck it must result in a squeak. We decide to delegate the quack method to another interface, which can be implemented either in a concrete class that returns a quack or a concrete class that returns a squeak. B. If we have an interface called Duck. We need to give an object to a user that can quack like a duck. All we have is Turkeys. We create a special class that implements the duck interface, and to implement the quack method we simply call the turkey’s gobble method. C. None of these are like the strategy pattern. D. We have a large collection of Ducks. We want to look at them one by one and hear them quack. We write a piece of code that iterates through them all, and as we encounter…
Programing language is Java. Define a class Person that represents a person. People have a name, an age, anda phone number. Since people always have a name and an age, your class shouldhave a constructor that has those as parameters. Define a toString() method whichdisplays all of the relevant information using a format like this: “Jim Lahey - Age 57- Phone 9025555555”.

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