Core Concepts
Foundational ideas for modeling data, telemetry, rules, and access control in DataHub.
Before configuring devices or writing rules, read these concepts. They explain how DataHub names data, moves telemetry, detects conditions, and enforces permissions.
Topics
| Concept | Summary |
|---|---|
| ISA-95 hierarchy | Plants, machines, devices, and tag paths |
| Unified Namespace | Live tree of all tag paths |
| Telemetry pipeline | Adapters → NATS → workers → storage |
| Data quality | Quality codes, liveness, adapter status |
| Rules, alarms, and actions | Six detectors and notification pipeline |
| RBAC | Resource + action permissions |
Suggested order
- ISA-95 hierarchy and UNS
- Telemetry pipeline and data quality
- Rules and RBAC before production rollout