type

Base Object | eventprefor
Attribute Name | type
ColumnName | type
Logical Rolename |
RoleName |
Definition | Type of location
Note |
    Range:		type = {H | C | A | D | U}
    		H = hypocenter
    		C = centroid
    		A = amplitude
    		D = double difference
    		U = unknown

evid

Base Object | eventprefor
Attribute Name | evid
ColumnName | evid
Logical Rolename |
RoleName |
Definition | Event identifier. Each event is assigned a unique integer which identifies it in a database. It is possible for several records in the Origin relation to have the same evid. This indicates there are several opinions about the location of the event. The evid does not have to be identical to the local network’s event identifier, which is stored in the Origin table. This allows merging data for a single event from multiple sources without insisting that database evid is identical to the source’s local event identifier
Note |
    Range:	            evid > 0

orid

Base Object | eventprefor
Attribute Name | orid
ColumnName | orid
Logical Rolename |
RoleName |
Definition | Origin identification. Each origin is assigned a unique positive integer which identifies it in the database. The orid is used to identify one of the many hypotheses of the actual location of the event
Note |
    Range:             orid > 0

lddate

Base Object | eventprefor
Attribute Name | lddate
ColumnName | lddate
Logical Rolename |
RoleName |
Definition | Load date. Date and time that the record was created, in Oracle date datatype
Note |
    Range:		Any valid date between January 01, 4712 BC and January 01, 4712 AD

    Units:		 YYYY/MM/DD HH24:MI:SS