UML Class Diagram
A UML class diagram models the classes, attributes, methods, and relationships in an object-oriented system before coding begins. Software architects use it to communicate structure clearly to development teams. Tip: always include multiplicity labels on associations to avoid ambiguity about one-to-many versus many-to-many relationships.
The prompt behind this diagram
Create a UML class diagram for a library management system. Include classes Book, Author, Member, Loan, and Librarian. Book has attributes title, isbn, and publicationYear, and methods checkAvailability(). Member has attributes name, memberId, and email. Loan associates Book and Member with attributes loanDate and dueDate, and a method calculateFine(). Show a one-to-many association between Author and Book, an aggregation between Librarian and Loan, and multiplicity labels on all relationships.
Paste your own description (or Terraform / docker-compose / SQL schema) into draft1 and get a diagram like this for your exact system.
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