Sharing Components: DRM Example

Class diagrams (left) define rules.

Object diagrams (right) follow those rules.

<Vertices> can be shared by <Polygons>, because

a <Vertex> can be a component of 0 or more <Polygons>.

Polygon

Base Vertex

{ordered}

V1

V2

V3

V5

V4

P2

P1

Polygon P1

Polygon P2

Vertex

Vertex with Component Indices

*

3..*

Vertex V1

Vertex V2

Vertex V3

Vertex V4

Vertex V5

DRM Diagram - Sheets 5, 18

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