For the order system with two classes Customer and Order: • Draw a UML class diagram that shows the relations between following classes in the order system. class attributes |Name (string) Id (string) Address (string) Date (date) Number (string) |operations SendOrder(orderNumber =or50) reciveOrder(orderNumber) PayBill(amount) Confirm name Customer class customer order Class Order Close generatePayment completePayment() Payment class Payment Billld(string) Amount (double) A Customer will send / recive an order and pay a bill to recive an order An Order will generate a payment for the order.

For the order system with two classes Customer and Order: • Draw a UML class diagram that shows the relations between following classes in the order system. class attributes |Name (string) Id (string) Address (string) Date (date) Number (string) |operations SendOrder(orderNumber =or50) reciveOrder(orderNumber) PayBill(amount) Confirm name Customer class customer order Class Order Close generatePayment completePayment() Payment class Payment Billld(string) Amount (double) A Customer will send / recive an order and pay a bill to recive an order An Order will generate a payment for the order.

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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Explain the following UML ClASS DIAGRAM
Indications:Person is an abstract class containing the abstract method Print().In Teacher and Student the method print() will print the information of either Teacher or Student.Write the class university corresponding to the following UML diagram. It contains three attributes.Tab is an array of Person. sizeTab is the size of Tab. The attribute n represents the number of elements added to the tab. When the tab is empty n is equal to 0.The constructor University(sizeTab) will initialize the different attributes and allocate the memory to the array Tab.addPerson(p:Person) will add the new person to Tab. The method printAll() will print all the information of the Persons inside Tab.Write the main method. Create three Teacher and three Student and add them to University Object and print them all.
In UML class diagram given below, which attributes and behaviors of the Animal class would be inherited by the Dog class? Animal int # numberOfLegs: # numberOfTails: int # name: String + walk() + run() + eat() + playFetch() Dog A None of the attributes and behaviors are inherited B numberOfLegs, numberOfTails, walk(), run(), eat() (c) All attributes and behaviors of Animal are inherited playFetch()
Class Employee Employee -Name (string) -ID(integer) -Address(string) -Salary(double) -Nationality(string) -ExtraWHours(int) +>( Name,ID) +void setdata( Address,Salary, ExtraWHours) 1. Regarding to the UML diagram create class Customer 2. Create the constructer Employee that read the Employee Name and ID and set the Nationality to Kuwaiti 3. Use the method setdata that set the remaining class data , this method verify that the number of extra working hours is greater than 5 to set the number to ExtraWHour otherwise set the number 1 + Overtime() to this data member + . get methods 4. create gets methods for all data member 5. calculate Employee overtime in Overtime method this method return double value after calculating the overtime by using the following formula Overtime = (Salary * 0.25)* ExtraWHours Test File 1. declare the object Employee1 with Name Fahad and id 7788 2. Ask the user to enter object data (Address, Salary, ExtraWHours) for the Employee1l objects 3. Set the data for…
Write the entire class definition for a Person class that contains the following attributes: Assuming your definition of the Person class is complete in Question 4, in the space below • name - a str value representing the Person's name. • weight - an int value representing the weight of the Person (in Ibs, but this metric is write the definition for a Student class that inherits from the Person class. The Student class must irrelevant for this problem). • contain an additional int attribute named pern. • define its own constructor that takes in a name (str), weight (inti, and perm (int) parameters. For this implementation, you can assume all parameters will be passed in and no default Your class definition should contain the following methods and correct behavior: • A constructor that sets the Person's name and weight to the object. An empty string (*) values are needed. Note: the Student constructor must utilize the Person constructor in order to set the nane and weight values…
Create a UML Class Model based on the requirements . Your Class Model is to include: All classes Attributes and Attribute Types Associations Multiplicity Primary and Foreign keys Any Inheritance, Composition or Aggregation. Building Maintenance system. A rental property management company wants to develop a ‘Building Maintenance System.’ This system will be used by the company to manage maintenance requests from tenants in the several rental buildings that it manages in the city. Each building has a maintenance manager. The maintenance manager is responsible for creating accounts in the system for each tenant in their building. A tenant can rent multiple apartments within the same building. Tenants can submit maintenance requests using this system. Each maintenance request will have a request ID, category, and description. The maintenance manager manages a maintenance crew in their building. Maintenance crew members can be members of more than one maintenance team. Maintenance crew…
In this exercise, you have to perform composition between the Toyota class and its Engine! Problem Statement# You have to create a Toyota class which inherits from a Car class, and is composed of an Engine Note: You already know that in such a composition relation, the oyota class will be res ible for Engine's lifetime. Consider this diagram for reference Car - id: int model: String - color: String + carFeatures(): void +setModel(): void + setColor(): void Toyota ToyotaEngine **** start): void stop): void . ..... + setStart(): void Part of- Car, Toyota and ToyotaEngine: Class Representation You should implement the Toyota class as the child class of the Car. It should have an instance of ToyotaEngine and a setStart() function which in turn calls the start () function of the ToyotaEngine class. The start () and stop () functions of ToyotaEngine class simply print out on screen that the engine has been started/stopped.
To partition the functionality of an implementation from the information it requires, programmers often establish a class. Consequently, this means that functions and classes may work with any kind of data. a data file with headers an artificial approach Instances of a generic class layout
Class Relationships Exercises 1. In Java, we use inheritance for "is-a" relationships. Containment, on the other hand, indicates that one object has another object. These are "has-a" relationships. For the following relationships, determine if they are a "is-a" or a "has-a" relationship: o bicycle - vehicle o car - engine o pizza - topping o food - pizza o dog - mammal 2. Share with someone else 3 other examples for each of the following relationships: o Inheritance ("is-a" relationship) o Containment ("has-a" relationship) 3. public class PersonInfo { protected String firstName; protected String birthdate; } public class ChildInfo extends PersonInfo { private String schoolName; } public class MotherInfo extends PersonInfo { private String spousename; private ChildInfo children1; private ChildInfo children2; private ChildInfo children3; ... } A. Draw the relationships for the classes above using UML. If a class inherits from another class, draw an open arrow pointing to the base class…