Data-Entry and Occurrence¶

Data-Entry¶

A Data-Entry is a collection of IDSs (potentially all IDSs) and their multiple occurrences. It is a database concept that allows grouping and storing data (compliant to the IMAS data model) as a single dataset with a unique reference via an IMAS URI.

Occurrence¶

There can be multiple instances, or “occurrences” of a given IDS in a data entry. These occurrences can correspond to different methods for computing the physical quantities of the IDS, or to different functionalities in a workflow (e.g. initial values, prescribed values, values at next time step, …), or even to multiple subsystems (e.g. diagnostics) of the same type in a given experiment.