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This paper is about the design of the NCEDC schema for the parametric information. This schema was designed to be able to store all the information from the CNSS format, following as much as possible the CSS 3.0 schema.
There are 15 relations in the schema. The information stored in these relations includes:
Event information, including preferred origin, preferred magnitude, etc.
Multiple origins for an event.
Multiple magnitudes for each origin.
Arrivals (seismic signals).
Association of arrivals with origins.
Association of amplitudes with origins, as well as with magnitudes.
Moment tensor information.
Association of coda information with magnitudes.
Association of coda information with origins.