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Class Diagram Updated 4/21/2026

Generic Repository Pattern over IEntity

Class diagram of a generic repository pattern built around IEntity. It shows IRepository<T> and Repository<T>, with Order and OrderItem as entity examples and OrderRepository as a concrete specialization.

class diagramrepository patterngenericsientitydomain entities
6 nodes 6 connections

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Library Management System

Class diagram for a library management system showing how the library, catalog, books and copies relate to members, librarians, loans, holds, fines, and payments, with status enums and notification services.

class diagramlibrary systemumlloans and holdsfines and paymentsnotifications
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Payment System

Payment System — class diagram with 11 nodes and 10 connections.

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