You are tasked with implementing a basic library system in Java. The program should allow users to add books to the library, borrow books, and return books. The system maintains a record of the available quantity of each book.Question:Write a Java program that accomplishes the following tasks:1. Implement the following options:Add BooksBorrow BooksReturn BooksExit2.     For "Add Books":Prompt the user to enter the book title, author, and quantity.If the book already exists in the library, update the quantity.If the book is new, add it to the library.3.     For "Borrow Books":Prompt the user to enter the book title and the number of books to borrow.Check if the requested number of books is available in the library.If the books are available, update the quantity and display a success message.If not, display an error message.4.     For "Return Books":Prompt the user to enter the book title and the number of books to return.Check if the books being returned belong to the library system.If they do, update the quantity and display a success message.If not, display an error message.5.     Handle invalid input and display appropriate error messages.6.     Implement an exit option to allow the user to exit the program.

Create a structure containing book information like accession number, name of author, book title and flag to know whether book is issued or not.Create a menu in which the following can be done.1 - Display book information2 - Add a new book3 - Display all the books in the library of a particular author4 - Display the number of books of a particular title5 - Display the total number of books in the library6 - Issue a book(If we issue a book, then its number gets decreased by 1 and if we add a book, its number gets increased by 1)

Design a database for a library management system. Each book in the library has multiple copies, and you want to implement afeature that allows users to check the availability of a specific book by its ISBN (International Standard Book Number).Write PL/pgSQL block using stored function. If book is available then it must return 1 else return 0.Consider relation:Books ( books_isbn,book_name) Now what you will write to check availability of book having ISBN-9780451524935

You are developing a library management system in C++. The system allows users to borrow and return books. Each book has a title, author, and a unique book ID. The library system uses a class called Book to represent each book.Question: Implement the necessary operator overloading functions in the Book class to compare two books based on their book IDs. The comparison should allow you to determine whether one book is greater than, less than, or equal to another book based on their IDs.Provide the necessary code for the Book class, including the member variables and the operator overloading functions for the comparison operators.

Objective: The objective of this activity is to implement a basic inventory management system using Java programming concepts such as user-defined methods, scanner, arrays, loops, and conditions.Task Overview:1. Create a new Java class named `InventorySystem`.2. Declare the following static variables inside the `InventorySystem` class:   - `MAX_ITEMS`: an integer constant to define the maximum number of items in the inventory (set it to 10).   - `items`: a string array to store the names of the items in the inventory (initialize it with the size of `MAX_ITEMS`).   - `quantities`: an integer array to store the quantities of the items in the inventory (initialize it with the size of `MAX_ITEMS`).3. Implement the `main` method inside the `InventorySystem` class:   - Create a `Scanner` object named `scanner` to read user input from the console.   - Use a `while` loop to keep the program running until the user chooses to exit.   - Inside the loop, display a menu of options to the user:     1. Add item to inventory     2. Sell item from inventory     3. Display inventory     4. Exit   - Use a `switch` statement to execute the corresponding action based on the user's choice (1, 2, 3, or 4).   - If the user selects option 1, call the `addItem` method.   - If the user selects option 2, call the `sellItem` method.   - If the user selects option 3, call the `displayInventory` method.   - If the user selects option 4, exit the program.Sample Output 4. Implement the `displayInventory` method:   - Iterate through the `items` and `quantities` arrays and display the name and quantity of each item in the inventory.Sample OutputNote: For other displayInventory functions, check the sample output in the addItem and in the sellItem methods. 5. Implement the `addItem` method:   - Prompt the user to enter the name of the item to be added.   - Check if the item already exists in the inventory by searching for its name in the `items` array.   - If the item does not exist, add it to the list. Automatically it will have value of 1.   - If the item already exists, prompt the user to enter the quantity to be added.   - Update the quantity of the existing item in the `quantities` array.Sample Output6. Implement the `sellItem` method:   - Prompt the user to enter the name of the item to be sold.   - Check if the item exists in the inventory by searching for its name in the `items` array.   - If the item does not exist or if its quantity is 0, display an error message.   - If the item exists and its quantity is greater than 0, prompt the user to enter the quantity to be sold.   - Update the quantity of the sold item in the `quantities` array.Sample Output7. Compile and run the `InventorySystem` class to test the inventory management system.8. Test the system by adding items to the inventory, selling items, and displaying the current inventory.9. When exit is chosen, the program will terminate

Develop an online book purchase system using structure concept in C and refer the following constraints.•    Define structures to represent a book and a user. Include attributes such as book ID, title, author, price.•    Use appropriate data types for each attribute and ensure encapsulation by making attributes private or protected.•    Select suitable functions to add, delete, and display books in the structure.Input:2CSE101 C++ ProgrammingDennis Ritchie2000CSE102Python ProgrammingDavid Mark 2500Output:Do you want to delete Y or N? YCSE101Successfully deleted!Remaining RecordsCSE102Python ProgrammingDavid Mark 2500