type

Base Entity | eventprefor
Attribute Name | type
Logical Rolename |
ColumnName | type
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 Entity | eventprefor
Attribute Name | evid
Logical Rolename |
ColumnName | evid
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 Entity | eventprefor
Attribute Name | orid
Logical Rolename |
ColumnName | orid
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 Entity | eventprefor
Attribute Name | lddate
Logical Rolename |
ColumnName | lddate
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