Relations connect isolated records into reusable knowledge.
| Relation | Meaning | Example |
|---|---|---|
| contains | One data object contains another. | Document contains tokens. |
| derived_from | A record is calculated or extracted from another. | Spectrum is derived from waveform. |
| measures | A value observes a property of an entity. | Temperature measures thermal state. |
| located_at | Data is associated with a spatial position. | Sensor reading located at coordinate. |
| occurs_at | An event is associated with time. | Transaction occurs at timestamp. |
| represents | One form encodes another concept or entity. | Vector represents semantic meaning. |
| processed_by | Data can be consumed by a tool or operation. | IP address processed by subnet calculator. |
