Create instances (objects) for the classes, involved in the "requesting a package to be delivered" and make sure to add and instance for the User Interface to start the process. Must have a minimum of 4 objects (including the User Interface instance). 4.2 Create a minimum of 8 messages and represent the message calls between all the objects. 2 of the messages must be self-messages (a message from the object to itself). and the activations are well 4.3 Make sure the object lifelines represented and clear. 4.1

Create instances (objects) for the classes, involved in the "requesting a package to be delivered" and make sure to add and instance for the User Interface to start the process. Must have a minimum of 4 objects (including the User Interface instance). 4.2 Create a minimum of 8 messages and represent the message calls between all the objects. 2 of the messages must be self-messages (a message from the object to itself). and the activations are well 4.3 Make sure the object lifelines represented and clear. 4.1

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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For the given design, Which of the following is NOT true about the design? Select one: a. It supports modular design. b. The AuthenticateUser sequence diagram can be reused only after a doB message call. c. The AuthenticateUser sequence diagram can be reused only when the authenticate() message is invoked on a B object. d. The DoFoo sequence diagram can be reused in any context where a B object and a C object are involved. e. The doB message must be called after the doA message.
Note - Give a step-by-step and brief explanation for your solution. To develop a user interface for our already-existing parking management system (class diagram included below – image 1), while ensuring that our code is loosely coupled, we need to provide a layer on top of the ParkingOffice class that will accept commands and send them on. This layer will be the ParkingService (class diagram included below- image 2) For simplicity, we’ll represent the commands and their arguments as strings. We must implement the following commands: CUSTOMER - register a customer, along with the appropriate information, with the parking office. The sequence diagram for this command is shown below (Image 2). CAR - register a car with the parking office and provide a permit for the car. The sequence diagram is very similar to that of the CUSTOMER registration. Based on the diagram below use java code to create the following classes and interfaces and implement the behavior described in the sequence…
Note - Give a step-by-step and brief explanation for your solution. To develop a user interface for our already-existing parking management system (class diagram included below – image 1), while ensuring that our code is loosely coupled, we need to provide a layer on top of the ParkingOffice class that will accept commands and send them on. This layer will be the ParkingService (class diagram included below- image 2) For simplicity, we’ll represent the commands and their arguments as strings. We must implement the following commands: CUSTOMER - register a customer, along with the appropriate information, with the parking office. The sequence diagram for this command is shown below (Image 2). CAR - register a car with the parking office and provide a permit for the car. The sequence diagram is very similar to that of the CUSTOMER registration. Based on the diagram below use java code to create the following classes and interfaces and implement the behavior described in the sequence…
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In this question consider you are working on designing a mobile application for an Online store. Currently, you are storing product detail in the mobile local database. Now you suppose you have a complete contract class to store the following table.
Consider an online holiday booking system. The users can register to book a holiday package. Assume that the Booking class has two attributes, booking_ref and booking_type. The booking_ref attribute has the information about the booking reference number whereas booking_date contains the information about the date of booking. Which of the following special terms describes the above design concept? Select one: O a. Data abstraction b. Information abstraction O C. Reference abstraction O d. Attribute abstraction
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