This UML use case diagram highlights the core inventory-related processes in a library management system involving the library and library admin roles. It illustrates functionalities like adding new books, tagging with barcodes, checking stock levels, updating book details, and removing outdated books. Included actions like receiving shipments and generating inventory reports to streamline administrative tasks. The UML use case diagram ensures seamless library stock handling and strengthens backend support for library automation. The library admin oversees reporting, while the general library staff handles inventory operations.