POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
An association of two or more things, identified by the things and the time or time period for which the association is of interest. Transient associations often represent the state of one thing with respect to another. The state of interest may be caused or terminated by activities, for example, storage of a product in a tank would be a transient association between tank and product, caused and terminated by transfer activities.
- description (O, I: ndt_comment) (C117)
- A remark or comment about the instance. Inherited from e_and_p_data.
- duration (O: ndt_time)
- Defines the duration of the association expressed in any valid units of time.
- end_time (O: ndt_date_tod)
- End time of the association.
- instance_create_date (O, I: ndt_date_tod) (C126)
- This is the date that this instance was created. This date is defined by the source if imported, or is the date the instance is created if a new instance. Inherited from e_and_p_data.
- instance_creator (O, I: ndt_identifier) (C126)
- This is the person, company or application that created this instance. This identifies the party responsible for loading this instance. Inherited from e_and_p_data.
- is_current (O: ndt_boolean) (C137)
- When TRUE, this flag indicates that this instance is designated as a current instance. This flag can be used in place of time based attributes or can be used in conjunction with them; however, it should not conflict with them.
- last_updated (O, I: ndt_date_tod) (C126)
- This is the date that this instance was last updated. This value should be updated when any part of this instance is altered (except for inverse relationships). Inherited from e_and_p_data.
- last_updated_by (O, I: ndt_identifier) (C126)
- This records the person or application making the update to this instance. Inherited from e_and_p_data.
- source (O, I: ndt_identifier) (C126)
- The provider of this instance, which is usually a data provider for imported/purchased data. If this instance is provided by POSC, then this attribute must be "POSC". Inherited from e_and_p_data.
- start_time (O: ndt_date_tod)
- Start time of the association.
- caused_by (O: activity(cause_association))
- Specifies the activity which establishes this association. Each transient_association may be caused by one activity.
- data_collection (I, V: SET[0:?] data_collection_content(collection_part)) (C020)
- Indicates the data collections that include this instance of E and P data. Each transient_association may be a member of one or more data_collection_content. Inherited from e_and_p_data.
- document_information_content (I, V: SET[0:?] document_information_content(e_and_p_data)) (C136)
- These are the document specification parts that include this data value and define its meaning within a document specification. Each use may define a different meaning, and many uses are allowed. Each transient_association may be included in one or more document_information_content. Inherited from e_and_p_data.
- graphical_element (I, V: SET[0:?] graphical_element(depicted_object))
- Specifies one or more graphical elements which are depicting this data item. Each transient_association may be depicted by one or more graphical_element. Inherited from e_and_p_data.
- ref_transient_period (O: ref_transient_period(transient_association)) (C138)
- The type of period over which the property applies, such as day, month, quarter, cumulative, etc. Each transient_association may represent a period of one ref_transient_period.
- terminated_by (O: activity(terminate_association))
- Specifies the activity which established the termination of a transient association between two objects. Each transient_association may be terminated by one activity.
Local rules:
- Abstract supertype:
- Each TRANSIENT_ASSOCIATION must be instantiated as one of its subtypes. These subtypes are: activity_activity_involvement, activity_classification, business_associate_injury, business_associate_job_title, business_associate_service, business_association, business_assoc_earth_ftr_role, business_assoc_facility_involv, business_assoc_security_status, business_contact, derived_interest_makeup, document_specification_clsn, document_spec_business_assoc, earth_feature_classification, equipment_item_connection, facility_classification, facility_composition, facility_connection, facility_version, fluid_cargo_transfer, fluid_flow_stream_allocation, geologic_feature_association, geometrical_relationship, grid_modification, guideline_compliance, interpreted_feature_assn, license_right_classification, license_right_lease_assn, material_classification, material_composition, material_installation, material_storage, object_activity_involvement, pfnu_external_connection, pfnu_group_allocation, phone_number_classification, position_uncertainty_clsn, property_damage, regulation_status, reserves_classification, reservoir_drive_mechanism, seismic_pick_classification, surface_fluid_phase_condition, topological_relationship, typical_activity_clsn, typical_facility_clsn, typical_facility_composition, typical_material_clsn, typical_material_composition, typical_material_succession, typical_material_version, wellbore_component_fcl_conn, wellbore_geologic_target, well_log_trace_classification
- Instance Value Constraint (C050)
-
If REF_TRANSIENT_PERIOD is either YEAR TO DATE, MONTH TO DATE or CUMULATIVE, then END_TIME must be instantiated.
- Instance Value Constraint (C050)
-
If REF_TRANSIENT_PERIOD is ANNUAL, SEMIANNUAL, QUARTER, MONTHLY, DAILY, or HOURLY, then either both START_TIME and END_TIME are blank or both must be instantiated.
- Instance Value Constraint (C050)
-
If REF_TRANSIENT_PERIOD is EVENT, then both START_TIME and END_TIME must either be blank or be identical.
Supertype path(s):
Referenced in Diagrams:
Generated on Tue Jul 10 15:55:09 2001
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