Library Management System A Library Management System is a software built to handle the primary housekeeping functions of a library. Libraries rely on library management systems to manage asset collections as well as relationships with their members. Library management systems help libraries keep track of the books and their checkouts, as well as members’ subscriptions and profiles. Library management systems also involve maintaining the database for entering new books and recording books that have been borrowed with their respective due dates. We will focus on the following set of requirements while designing the Library Management System:

1. Each book will have a unique identification number and other details including a rack number which will help to physically locate the book.
2. There could be more than one copy of a book, and library members should be able to check-out and reserve any copy. We will call each copy of a book, a book item.
3. The system should be able to retrieve information like who took a particular book or what are the books checked-out by a specific library member.
4. There should be a maximum limit (5) on how many books a member can check-out.
5. There should be a maximum limit (10) on how many days a member can keep a book.
6. The system should be able to collect fines for books returned after the due date.
7. Each book and member card will have a unique barcode. The system will be able to read barcodes from books and members’ library cards. We have three main actors in our system: • Librarian: Mainly responsible for adding and modifying books, book items, and users. The Librarian can also issue, reserve, and return book items. • User: All members can search the catalog, as well as check-out, reserve, renew, and return a book. • Admin: The super controller of the system Here are the top use cases of the Library Management System: • Add/Remove/Edit book: To add, remove or modify a book or book item. • Register new account/cancel membership: To add a new member or cancel the membership of an existing member. • Check-out book: To borrow a book from the library. • Return a book: To return a book to the library which was issued to a member. Here are the main classes of our Library Management System: • Library: The central part of the organization for which this software has been designed. It has attributes like ‘Name’ to distinguish it from any other libraries and ‘Address’ to describe its location. • Book: The basic building block of the system. Every book will have ISBN, Title, Subject, Publishers, etc. • BookItem: Any book can have multiple copies, each copy will be considered a book item in our system. Each book item will have a unique barcode. • User: We will have three types of users in the system, one will be a general member, and the other will be a librarian while the third one will be the admin. • Lending: Manage the checking-out of book items. • Category: Category contain list of books sorted on certain criteria. Our system will support searching through four catalogs: Title, Author, Subject, and Publish-date. • Fine: This class will be responsible for calculating and collecting fines from library members. • Rack: Books will be placed on racks. Each rack will be identified by a rack number and will have a location identifier to describe the physical location of the rack in the library.