| Component | -- | output | 0..* | --> | OutputPort | |
| Component | -- | input | 0..* | --> | InputPort | |
| Component | -- | container | 0..1 | --> | Construct | |
| Connect | <-- | 1 | destination | 1 | --> | InputPort |
| Connect | <-- | 0..* | source | 1 | --> | OutputPort |
| Construct | -- | subpipeline | 1 | --> | Subpipeline | |
| Literal | -- | infoset | 1 | --> | XML Document | |
| Subpipeline | -- | component | 1..* | --> | Component | |
| Subpipeline | -- | connect | 0..* | --> | Connect |