Library-Management System there are several services : auth service : to handle users and authentication book service : to manage books authors service : to manage authors category service : to manage book categories Entity-Relationship Diagram (ERD) : this is the schema of database design systems book_db: database for book-svc only have book table book id title author_id description category_id stock created_at updated_at author_db: database for author-svc only have author table author id name biography created_at updated_at category_db: database for category-svc only have category table category id name description created_at updated_at user_db: database for user-svc have two tables (borrowing and user) borrowing id user_id book_id borrow_date due_date return_date status UserService user id username password_hash email created_at updated_at
