Consider an online holiday booking system. The users can register to book a holiday package. Currently, the design model includes the classes: User, Package and Family Package. Which of the following is correct about a Package object in the object-oriented software design? Select one: O a. A Package object's attributes should always be made public and directly accessible. O b. A Package object contains a set of attributes only. OC. A Family Package object contains a set of methods only. O d. A Package object is one instance of its class.

Consider an online holiday booking system. The users can register to book a holiday package. Currently, the design model includes the classes: User, Package and Family Package. Which of the following is correct about a Package object in the object-oriented software design? Select one: O a. A Package object's attributes should always be made public and directly accessible. O b. A Package object contains a set of attributes only. OC. A Family Package object contains a set of methods only. O d. A Package object is one instance of its class.

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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Consider an online holiday booking system. The users can register and log in to book a holiday package. Currently, the holiday packages offered to users include ski and cruise packages. Which of the following is the most appropriate for an object-oriented design? Select one: O a. The classes, Ski and Cruise, should be modelled in the aggregation association with the Package class. O b. The classes, Ski and Cruise, should be modelled as sub-types of the Package class. O c. The classes, Ski and Cruise, should be modelled as the interface classes to the Package class. O d. The classes, Ski and Cruise, should be modelled in the composition association with the Package class.
ABC Blood bank wanted to fix the cost for all types of Blood group according to the availability of them. They planned to fix the cost in such a way that the rarely available Bloodgroups are charged high compared to the others. Write a program to get the Blood group and the cost for all blood groups, help them to display the blood group with the lowest cost using a parameterized constructor.Strictly adhere to the Object-Oriented specifications given in the problem statement. All class names, member variable names, and function names should be the same as specified in the problem statement. The class Blood has the following private data members. Data Type Variable Name string blood_group int cost Include appropriate default and parameterized constructors for the above class.Include the following method in the Blood class Method Member Functions void display(Blood obj[], int n) This method is used to display the details of the blood group with the lowest cost.Display…
The Essay class has a default constructor, a constructor with two parameters, and a constructor with three parameters. Declare the following objects: essay1 with no arguments essay2 with essayTitle and essayAuthor as arguments essay3 with essayTitle, essayAuthor, and essayYear as arguments Ex: If the input is Painting Cole 1919, then the output is: Essay: Undefined, Unspecified, 0 Essay: Painting, Cole, 0 Essay: Painting, Cole, 1919 Archive.java public class Archive { publicstaticvoidmain(String[] args) { Scannerscnr=newScanner(System.in); StringessayTitle; StringessayAuthor; intessayYear; essayTitle=scnr.next(); essayAuthor=scnr.next(); essayYear=scnr.nextInt(); /* Your code goes here */ essay1.print(); essay2.print(); essay3.print(); } } Essay.java public class Essay { private String title; private String author; private int year; public Essay() { // Default constructor title = "Undefined"; author = "Unspecified"; year = 0; }…
نقطة واحدة which application of oop can be provide a degree of freedom in the :interface design option Inheritance Object and class polymorphism Friend functions
The ACTION and METHOD attributes are utilized by both forms and code to accomplish a variety of tasks.
A. Create a program by using OOP concept 1. Create a 1 Parent class and implement it to 2 Child class 2. Inside the parent class create 4 methods and 3 abstract methods. 3. Inside the child class create at least 2 unique methods and constructor with at least 2 parameters. 4. Call all the methods from the Parent and child class by using object. 5. Call also the constructor of the child class.
How can I write this java object oriented program??
Define the Artist class in Artist.py with a constructor to initialize an artist's information. The constructor should by default initialize the artist's name to "None" and the years of birth and death to 0. Define the Artwork class in Artwork.py with a constructor to initialize an artwork's information. The constructor should by default initialize the title to "None", the year created to 0, and the artist to use the Artist default constructor parameter values. Add an import statement to import the Artist class. Add import statements to main.py to import the Artist and Artwork classes. Ex: If the input is: Pablo Picasso 1881 1973 Three Musicians 1921 the output is: Artist: Pablo Picasso (1881-1973) Title: Three Musicians, 1921 If the input is: Brice Marden 1938 -1 Distant Muses 2000 the output is: Artist: Brice Marden, born 1938 Title: Distant Muses, 2000 Code: def __init__(self,aname = "None",abirth = 0,adeath = 0): self.aname = aname self.abirth_year = abirth self.adeath_year =…
Show Rehearse Click to add notes Set Up Hide Side Show Side ● Record Timings Side Show ✅Show Media Controls Task 1 Create a package called Adoption Center with the two classes Petinfo.java and PetOwnerInfo.java Petinfo: Create a class called PetInfo.java that has the following: name, age, weight, type as private attributes, a parameterized constructer that sets all the attributes, a getter for name, a setter for age, and a display() method that prints in the following format Milo is a dog who is 4 years old and weighs 10.5 lbs. PetOwnerinfo: Create a class called PetOwnerinfo.java that has the following: name, email, and age as private attributes, a parametrized constructor that sets all the attributes, a getter for name, a setter methods for email, and a display() method that prints in the following format Skippy is 28 years old. Their email is iLoveMilo@gmail.com. Add JavaDoc comments to both classes
The ACTION and METHOD attributes are used by both code and forms to perform a wide range of tasks.
Consider an online holiday booking system. The initial design model contains the classes, Booking, Individual_Booking and Group_Booking via inheritance. Which of the following is used to describe the relationship of the three classes in the object-oriented design? a. The has-a relationship b. The get-a relationship c. The set-a relationship d. The is-a relationship
Define the Artist class in Artist.py with a constructor to initialize an artist's information. The constructor should by default initialize the artist's name to "unknown" and the years of birth and death to -1. Define the Artwork class in Artwork.py with a constructor to initialize an artwork's information. The constructor should by default initialize the title to "unknown", the year created to -1, and the artist to use the Artist default constructor parameter values. Add an import statement to import the Artist class. Add import statements to main.py to import the Artist and Artwork classes. Ex: If the input is: Pablo Picasso 1881 1973 Three Musicians 1921 the output is: Artist: Pablo Picasso (1881 to 1973) Title: Three Musicians, 1921 Ex: If the input is: Brice Marden 1938 -1 Distant Muses 2000 the output is: Artist: Brice Marden (1938 to present) Title: Distant Muses, 2000 Ex: If the input is: Banksy -1 -1 Balloon Girl 2002 the output is: Artist: Banksy (unknown) Title: Balloon…