Specification

The ARC Data Model specification defines ProcessCore and a set of decoration profiles that map domain-specific ARC concepts onto the shared process graph.

Reading Order

1. ProcessCore
2. Decorations
3. Querying

Principles

• Process-centric: experiments and workflows are modeled as processes connecting inputs to outputs.
• Extensible: PropertyValue and additionalType carry domain-specific information without changing core entities.
• Representation-aware but model-first: SQL and YAML schemas derive from the markdown spec.

Main Areas

Area	Description
ProcessCore	Foundational model: Dataset, LabProcess, LabProtocol, Material, Data, PropertyValue, FormalParameter, and DefinedTerm
ISA Decoration	Investigation/Study/Assay and ISA-specific roles
Workflow Run Decoration	Workflow and Run datasets, workflow protocols, and workflow invocations
Datamap Decoration	Datamap datasets and DataContext fragment annotations
Querying	Query use cases and graph traversal notes