Data links give links to other catalog entities within the repository. For example, a given observation could be linked to the device which produced the data (MeasureFromDevice), the organization who has built the device and where the device is (FoundInOrganization) and even the researcher or principle investigator responsible for the observation (ExperimentPerformedBy). Links could also be made to other observations or to calibrations on which the data depends (MethodologyInstrumentCalibrationLink).