Unified Modeling Language - An Introduction

Discover how the UML class diagram represents the static view of an application, detailing attributes, functions, and relationships, and serves as a base for forward and reverse engineering.

Explore the six UML class diagram relationships—association, inheritance, realization, dependency, aggregation, and decomposition—and illustrate each with examples like driver and car, or head and body.

Explore a class diagram example from a sales order system, illustrating customer, order, detail, item, and payment, with one-to-many, 1-to-0 relationships, aggregation, and abstract inheritance for cash, check, and credit.

Understand how a use case diagram models actors, use cases, and the system boundary, and apply association, generalization, extend, and include relationships to illustrate library processes.

Describe use case diagrams by identifying actors, use cases, system boundaries, and packages, and illustrate relationships including association, generalization, extend, include, and use case generalization.

Describes how a sequence diagram models object interactions using lifelines, messages, and activation bars, detailing synchronous, asynchronous, and return messages, plus creation, destruction, reflexive and comments.

Illustrate a sequence diagram of a passport application, mapping user interactions with a portal interface and database to appointment scheduling, background checks, and passport issuance.