HL1: High Level Model
Entity Relationship Diagram for Epicentre V3.0 Data Model Copyright (C) 2001 POSC, All Rights Reserved.
caused_by Each transient_association may be caused by one and only one activity. cause_association Each activity may cause one or more transient_association. terminated_by Each transient_association may be terminated by one and only one activity. terminate_association Each activity may terminate one or more transient_association. activity association business_object data_collection data_trace document_specification e_and_p_data earth_feature facility geologic_process interpreted_feature locatable_object material object_of_interest process_data property ref_data spatial_object technical_object topological_object transient_association