POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
This association defines the fluid flow streams for which split and shrinkage factors describe. The source is the fluid flow stream from which fluids are removed. The target is the fluid flow stream into which fluids are added. The fluid being described in this association is defined by the source and target fluid flow streams.
- end_time (O, K, I: ndt_date_tod)
- End time of the association. Inherited from transient_association.
- flow_stream_source (M, K: fluid_flow_stream(source_for_allocation)) (C126)
- This defines the source for the fluid flow allocation being described. This identifies the fluid flow stream in which the fluid originates. For example, for a split factor of 25%, the source is the flow stream which is 100%. Each fluid_flow_stream_allocation must must describe the source of fluids from one fluid_flow_stream.
- flow_stream_target (M, K: fluid_flow_stream(target_of_allocation)) (C126)
- This defines the target for the fluid flow allocation being described. This identifies the fluid flow stream that receives the allocated fluid. For example, for a split factor of 25 percent, the target is the flow stream which is 25 percent of the source. Each fluid_flow_stream_allocation must must describe the target of fluids as one fluid_flow_stream.
- start_time (O, K, I: ndt_date_tod)
- Start time of the association. Inherited from transient_association.
- description (O, I: ndt_comment) (C117)
- A remark or comment about the instance. Inherited from e_and_p_data.
- duration (O, I: ndt_time)
- Defines the duration of the association expressed in any valid units of time. Inherited from transient_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, I: 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. Inherited from transient_association.
- 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.
- caused_by (O, I: activity(cause_association))
- Specifies the activity which establishes this association. Each fluid_flow_stream_allocation may be caused by one activity. Inherited from transient_association.
- 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 fluid_flow_stream_allocation 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 fluid_flow_stream_allocation 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 fluid_flow_stream_allocation may be depicted by one or more graphical_element. Inherited from e_and_p_data.
- pty_fl_flow_stream_shrnk_fact (V: SET[0:?] pty_fl_flow_stream_shrnk_fact(fluid_flow_stream_allocation)) (C112)
- These are the shrinkage factors that describe the portion of the source fluid flow stream that is allocated to the target fluid flow stream described by this allocation. Generally, the source is a measured fluid flow stream and the source fluid is defined as a fluid phase, while the target is an allocated fluid flow stream and the target fluid is defined as a fluid component. Each fluid_flow_stream_allocation may may have a property of one or more pty_fl_flow_stream_shrnk_fact.
- pty_fl_flow_stream_split_fact (V: SET[0:?] pty_fl_flow_stream_split_fact(fluid_flow_stream_allocation)) (C112)
- These are the split factors that describe the portion of the source fluid flow stream that is allocated to the target fluid flow stream described by this allocation. Generally, the fluid flow streams that use this description are of the same subtype (i.e., both are allocated or measured). Each fluid_flow_stream_allocation may have a property of one or more pty_fl_flow_stream_split_fact.
- ref_transient_period (O, I: ref_transient_period(transient_association)) (C138)
- The type of period over which the property applies, such as day, month, quarter, cumulative, etc. Each fluid_flow_stream_allocation may represent a period of one ref_transient_period. Inherited from transient_association.
- terminated_by (O, I: activity(terminate_association))
- Specifies the activity which established the termination of a transient association between two objects. Each fluid_flow_stream_allocation may be terminated by one activity. Inherited from transient_association.
Local rules:
- Uniqueness Constraint
- end_time, flow_stream_source, flow_stream_target, start_time
- [I: transient_association] Instance Value Constraint (C050)
-
If REF_TRANSIENT_PERIOD is either YEAR TO DATE, MONTH TO DATE or CUMULATIVE, then END_TIME must be instantiated.
- [I: transient_association] 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.
- [I: transient_association] 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 15:42:10 2001
© Copyright 2001 POSC. All rights reserved.