Entity Types
Complete reference of all work item types in the RTM model, including properties, custom fields, and lifecycle.
Relationships and Link Roles
How work items connect across the V-model: refines, verifies, validates, mitigates, and more.
Constraints and Validation
Business rules, cardinality constraints, and validation that maintain data integrity.
Expansion Paths
How risksheet and powersheet denormalize RTM relationships for spreadsheet visualization.
Quick Overview
The RTM model in TestAuto2 consists of:- 12+ entity types spanning requirements, functions, failure modes, risk controls, and test cases
- 8 primary link roles defining traceability chains (refines, verifies, validates, mitigates, assesses, and more)
- Cardinality rules enforcing 1:N, M:N, and hierarchical relationships
- Expansion patterns used by powersheet to traverse relationships and create denormalized views
Core Traceability Chain
Key Concepts
Work item types like Hazard, Safety Goal, and Risk Control are marked as safety-critical in the RTM model. Failure Mode and Characteristic items linked to Safety-Critical (SC) requirements inherit safety status for ASIL allocation.
Use Cases
| Scenario | Reference Page |
|---|---|
| I need to understand which entities exist and their fields | Entity Types |
| I’m setting up links between requirements and tests | Relationships and Link Roles |
| I want to ensure my data follows TestAuto2 rules | Constraints and Validation |
| I’m configuring a powersheet with denormalized data | Expansion Paths |