DATABASE CONCEPTS CUSTOM
8th Edition
ISBN: 9780134639864
Author: KROENKE
Publisher: PEARSON C
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Chapter 2, Problem 2.21RQ
Explain three possible interpretations of a null value.
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Question3: (30 MARKS) Passenger Rail Agency for South Africa Train Scheduling System Problem Statement Design and implement a train scheduling system for Prasa railway network. The system should handle the following functionalities: 1. Scheduling trains: Allow the addition of train schedules, ensuring that no two trains use the same platform at the same time at any station. 2. Dynamic updates: Enable adding new train schedules and canceling existing ones. 3. Real-time simulation: Use multithreading to simulate the operation of trains (e.g., arriving, departing). 4. Data management: Use ArrayList to manage train schedules and platform assignments. Requirements 1. Add Train Schedule, Cancel Scheduled Train, View Train Schedules and Platform Management 2. Concurrency Handling with Multithreading i.e Use threads to simulate train operations, Each…
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Question 1: (40 MARKS)
E-Hailing Bicycle Management System
Case Study:An e-hailing company that rents out bicycles needs a system to manage its bicycles, users, and borrowing process. Each user can borrow up to 2 bicycles at a time, specifically for families with children 18 years or below. The system must track the bicycles (name, make, type, and availability) and users (name, ID, and borrowed bicycles).
The company also wants to ensure that the system uses a multidimensional array to store information about the bicycles.
Requirements:
Add and View Bicycles:
Borrow Bicycles:
Return Bicycles
Display Borrowed Bicycles and Search for a bicycle
Create a menu-driven program to implement the above.
Sample Output:
Add Bicycle
View All Bicycles
Borrow Bicycle
Return Bicycle
View Borrowed Bicycles
Search Bicycle
ExitEnter your choice:
Question 2 (30 MARKS)
Pentagonal Numbers
Problem Statement
Create a Java program that will display the first 40 pentagonal…
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Question 1 (40 MARKS) - E-Hailing Bicycle Management System
Case Study:An e-hailing company needs a Java system to manage bicycle rentals. Key requirements:
Users (families with children ≤18) can borrow up to 2 bicycles.
Track bicycles (name, make, type, availability) and users (name, ID, borrowed bikes).
Use a multidimensional array for bicycle data.
Functionalities:
Add/view bicycles.
Borrow/return bicycles.
Display borrowed bikes and search functionality.
Menu-driven program with the following options:
Copy
1. Add Bicycle 2. View All Bicycles 3. Borrow Bicycle 4. Return Bicycle 5. View Borrowed Bicycles 6. Search Bicycle 7. Exit
Question 2 (30 MARKS) - Pentagonal Numbers
Problem Statement:Write a Java program to display the first 40…
Chapter 2 Solutions
DATABASE CONCEPTS CUSTOM
Ch. 2 - Prob. 2.1RQCh. 2 - Define the term entity, and give an example of an...Ch. 2 - Prob. 2.3RQCh. 2 - Prob. 2.4RQCh. 2 - Prob. 2.5RQCh. 2 - Prob. 2.6RQCh. 2 - Prob. 2.7RQCh. 2 - Prob. 2.8RQCh. 2 - Prob. 2.9RQCh. 2 - Define the term unique key and give an example.
Ch. 2 - Prob. 2.11RQCh. 2 - Prob. 2.12RQCh. 2 - Define the terms candidate key and primary key....Ch. 2 - Describe four uses of a primary key.Ch. 2 - Prob. 2.15RQCh. 2 - Prob. 2.16RQCh. 2 - Prob. 2.17RQCh. 2 - Explain the term foreign key, and give an example.Ch. 2 - Prob. 2.19RQCh. 2 - Prob. 2.20RQCh. 2 - Explain three possible interpretations of a null...Ch. 2 - Give an example of a null value (other than one...Ch. 2 - Prob. 2.23RQCh. 2 - Prob. 2.24RQCh. 2 - Prob. 2.25RQCh. 2 - Prob. 2.26RQCh. 2 - Prob. 2.27RQCh. 2 - Define the term primary key in terms of functional...Ch. 2 - Prob. 2.31RQCh. 2 - Examine the data in the Veterinary Office...Ch. 2 - Prob. 2.33RQCh. 2 - Describe a modification problem that occurs when...Ch. 2 - Prob. 2.35RQCh. 2 - Prob. 2.36RQCh. 2 - Prob. 2.37RQCh. 2 - Apply the normalization process to the Veterinary...Ch. 2 - Prob. 2.39ECh. 2 - Apply the normalization process to the Veterinary...
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