Data
Elements that represent process information: data objects, inputs/outputs, persistent data stores and collections.
- Data Object
Represents information flowing through the process — a document, record or data set an activity produces or consumes. It documents data; it never changes the flow. Sheet-of-paper shape with a folded corner.
- Data Input
Data the process REQUIRES from the outside at its start — the formal input parameter of the process. Data-object shape with a hollow arrow marker.
- Data Output
Data the process DELIVERS to the outside when it completes — the formal output parameter of the process. Data-object shape with a filled arrow marker.
- Data Store
A persistent data repository — database, archive, system of record — that outlives process instances and is shared between them. Cylinder shape.
- Data Collection
The marker (three vertical bars) indicating a data object holds MULTIPLE items — a list, not a single record.