Three categories of UML components

Work Product

Deployment

Execution Component

Two Aspects for UML Components

Development Aspect

Deployment Aspect

What is Development Aspect?

How component is developed as opposed to being bought or reused "as is"

Component development aspect is modeled using Work Product components

Modeling work products enables to visually represent compilation dependencies among the source code elements.

Important for their configuration management and version control

Element in UML subsystem is mapped to work product using trace dependency relationship