t-Protégé: A Temporal Extension for Protégé
Technical Report TR-SSDBL-06-001, SDBS Lab, University of Peloponnese, 2006.
This work is an extension of the Protégé tool to accommodate the modeling and presentation of entity history, i.e. past values of properties and/relationships; each such value is timestamped with the period that it was (or will be) valid in the real world. To this end, the presented extension provides:
- integrated support for data types expressing time quantities - more specifically dates (individual points in time) and periods (anchored segments of the time axis).
- data types for storing histories of properties of different types (strings, integers, floats, booleans and instances [i.e. relationships]).
The extension can be used in contexts that the modeling of entities' history is important, such as historical archives, museums, etc.
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