Student - studentld: int - studentName: String - studentCGPA: double Course |- courseld: String |- courseTitle: String |- credit: double - studentList: Student [] - numberOfStudents: int - faculty: Faculty Faculty - facultyld: int - facultyName: String - facultyPosition: String + Course() + Course(courseld, courseTitle, credit) + toString(): String + addStudent(Student): void + dropStudent(studentId): void + addFaculty(Faculty): void + dropFaculty(): void + printStudentList(): void + Student() + Student(studentld, studentName, studentCGPA) + toString(): String + Faculty() + Faculty(facultyld, facultyM facultyPosition) + toString(): String

Student - studentld: int - studentName: String - studentCGPA: double Course |- courseld: String |- courseTitle: String |- credit: double - studentList: Student [] - numberOfStudents: int - faculty: Faculty Faculty - facultyld: int - facultyName: String - facultyPosition: String + Course() + Course(courseld, courseTitle, credit) + toString(): String + addStudent(Student): void + dropStudent(studentId): void + addFaculty(Faculty): void + dropFaculty(): void + printStudentList(): void + Student() + Student(studentld, studentName, studentCGPA) + toString(): String + Faculty() + Faculty(facultyld, facultyM facultyPosition) + toString(): String

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

See similar textbooks

Similar questions

Q.No.1. A) When would private and protected class members be used in an object-oriented program? Clearly distinguish between them. B) How are private and protected class members represented in a UML class diagram? Give an example class definition in UML that contains a field of each type. Q.No.2. A) Describe how is-a and has-a inter-class relationships may be implemented in object-oriented programming, give code examples to support your answer. B) Explain the difference between the object-oriented design concepts of generalization and specialization and describe how these relate to the inheritance feature in object-oriented programming languages. Q.No.3. A) Describe TWO features of object-oriented programming languages that promote code reuse. B) Name THREE different types of polymorphism commonly available in object-oriented programming languages, give code examples to support your answer.
1. Which of the four fundamental features of object-oriented programming could be thought of as removing unnecessary details, allowing the user to focus only on what is necessary? (put NA if it applies to none of them) 2. Classes cannot contain multiple attributes without instantiation of multiple objects True False 3. class Cow: def _init_(self,name,age,weight): self.name=name self.age= age self.weight=weight my_cow=Cow('bessie',8,1800) print(f'I have a cow naned {my_cow.name}') Based on the above code, what would print, and why? Error; my_cow was not created properly I have a cow named Bessie; because the code is fine Error; 8 and 1800 were not utilized Error; Cow was not created properly 4. class car(): def _init_(self,name): self.name=namemycar=car("Mysterious Machine")type(mycar) Given this code, what is the type of…
Briefly answer the following: Consider the Ben Ten character and his transformation into different Aliens, briefly discuss which OOP pillar may implement over this Inheritance is used for code reusability, discuss what makes difference between the “has a” relationship and “is a” relationship. List with the real life Java does not support multiple inheritance using classes due to diamond Briefly explain diamond problem with code example. Differentiate among the static, final, and finally As C++ uses destructor to release space of unused object, discuss how java reclaims space from unused How would you throw custom exception? How would you re-throw exception? Discuss with code example Differentiate between checked and unchecked exception. Briefly explain with real life scenario. Explain the constructor chaining with code Differentiate between abstraction and Encapsulation. Discuss advantages and disadvantages of Briefly explain composition. List five real examples of I WANT ANSWER OF…
Briefly explain the following questions: What are access modifiers? Explain by creating some properties and signature of methods. Why it is said that we can achieve reusability and code maintainability by using object-oriented architecture? What is Encapsulation and how can we achieve it? Explain by creating a well encapsulated class. What are Getter Setter properties? Explain with the help of programming example. Differentiate between Static and Private Constructor? Does C# support multiple inheritance? If not, then how can we achieve multiple inheritance in C#? How interface differ from abstract classes? What is the basic concept of abstract classes and interfaces? What are virtual functions? Explain with the help of programming example.
Why is it necessary to put in additional effort and code in Java programming (or object-oriented programming in general) in order to prevent having classes that are unnecessarily linked? Give three essential grounds for your position.
A server program written in one language (for example, C++) provides the implementation of a Person object (class) that is intended to be accessed by clients that may be written in a different language (for example, Java, PHP, C#). The client and server computers may have different hardware, but all of them are attached to an internet.Describe the problems due to each of the five aspects of heterogeneity that need to be solved to make it possible for a client object to invoke a method on the server object.
Design and implement Java program as follows:(1) There will be a Gift class with following attributes: id (combination of numbers and letters),size (values S, M, or L), and price(2) There will be two child classes FruitBasket and SweetsBasket with the following additionalattributes: FruitBasket: number of fruits, include citrus fruits indication (true or false) SweetsBasket: include nuts indication (true or false)(3) The Gift class hierarchy must provide the following Functionality: On creation, a gift instance must be given all attribute values except price which must becalculated and number of fruits which must be set by system All attribute values can be changed after creation except id and the values that arecalculated or set by the system Price is calculated as follows:o There is a flat fee of 19.99 for S gift, 29.99 for M gift, and 39.99 for L gift.o Fruit basket gift has additional fee of 5.99 when it has citrus fruits. Number of fruits in a basket is as follows: Small…
SOLVE IN C# Package-delivery services, such as FedEx and DHL, offer a number of different shipping options, each with specific costs associated. Create an inheritance hierarchy described as follows to represent various types of packages: Use class Package as the base class of the hierarchy, Base class Package should include data members representing the name, address, city, state and ZIP code for both the sender and the recipient of the package, in addition to data members that store the weight (in ounces) and cost per ounce to ship the package. Package’s constructor should initialize these data members. Ensure that the weight and cost per ounce contain positive values. Package should provide a public member function calculateCost that returns a double indicating the cost associated with shipping the package. Package’s calculateCost function should determine the cost by multiplying the…
Inheritance is a fundamental character in object-oriented programming. As a junior developer in the fintech field working on a project, associate two real world objects with software objects. Ensure you describe the state and behaviour of these objects, capping it with java code showing the relationship between those two objects in software aspects.
Implement all these classes while illustrating the concept of aggregation and composition in terms of ownership and life-cycle. Consider six classes i.e. Person, Department, Laboratory, and University having following specifications. Class University has Two attributes of type string i.e. universityName and location· An attribute named dept of type Department Class Department has Two attributes i.e. deptID, deptName· A two-argument constructor to initialize data fields with user-defined values· A member function display() to show all attribute values Class Laboratory contains Two attributes i.e. labID and experimentNo· A two-argument constructor to initialize data member with user-defined values Class Person has Two attributes i.e. name and age· A parameterized constructor to initialize attributes with user-defined values· A member function display() to show its attribute values
Why is it essential to spend extra effort and code in java programming (or object-oriented programming in general) to avoid excessively linked classes? Give three fundamental reasons.
Why is it required to invest extra time and effort to prevent overly linked classes while programming in Java (and object-oriented programming in general)? Why is it vital to avoid having classes that are too closely related to one another? What are the top three explanations for this?