| POSC Specifications Version 2.2 |
Epicentre Logical Data Model |
A property characteristic of equipment item, general facility, catalog equipment, typical facility, material, equipment class and facility class. The characteristic is defined by a property kind, a value representation, and a time defining when the property is associated with the equipment or facility. Four types of value representations are defined as subtypes allowing use of quantity, string, point and line data types.
- ref_property_kind (M: ref_property_kind)
- Specifies the type of property. This is the role the data value with respect to the object which has this property. Each pty_equipment_facility must be a value for one ref_property_kind.
- description (O: ndt_comment)
- A description of the general property.
- end_time (O, I: ndt_date_tod)
- The date and time of day designated as the end of the valid or effective time interval over which the property applies. Inherited from pty_transient_property.
- preferred_flag (O, I: ndt_boolean) (1047)
- The flag is set to True if this instance of property is the preferred value in this data store of this type of property for the object which this property describes. Inherited from property.
- start_time (O, I: ndt_date_tod)
- The date and time of day that designated the start of the valid or effective time interval over which the property applies. Inherited from pty_transient_property.
- activity (O, I: activity(process_data))
- Defines the activity which created this instance. Each pty_equipment_facility may be the result of one activity. Inherited from process_data.
- catalog_equipment (O: catalog_equipment(pty_equipment_facility))
- Each pty_equipment_facility may be a property of one catalog_equipment.
- classification_class (O: classification_class(pty_equipment_facility))
- Each pty_equipment_facility may be a property of one classification_class.
- data_collection (I, V: SET[0:?] data_collection(collection_content))
- Indicates the data collections that include this instance of E and P data. Each pty_equipment_facility may be a member of one or more data_collection. Inherited from e_and_p_data.
- equipment_item (O: equipment_item(pty_equipment_facility))
- Each pty_equipment_facility may be a property of one equipment_item.
- general_facility (O: general_facility(pty_equipment_facility))
- Each pty_equipment_facility may be a property of one general_facility.
- graphical_element (I, V: SET[0:?] graphical_element(depicted_object))
- Specifies one or more graphical elements which are depicting this data item. Each pty_equipment_facility may be depicted by one or more graphical_element. Inherited from e_and_p_data.
- other_material (O: other_material(pty_equipment_facility))
- Each pty_equipment_facility may be a property of one other_material.
- other_spatial_object (O, I: other_spatial_object(property))
- Each pty_equipment_facility may be a property of one other_spatial_object. Inherited from property.
- process_data_item (I, V: SET[0:?] process_data_item(process_data))
- Defines where this data was used by an activity. Each pty_equipment_facility may be the value for one or more process_data_item. Inherited from process_data.
- ref_transient_period (O, I: ref_transient_period)
- The type of period over which the property applies, such as day, month, quarter, cumulative, etc. Inherited from pty_transient_property.
- typical_facility (O: typical_facility(pty_equipment_facility))
- Each pty_equipment_facility may be a property of one typical_facility.
Local rules:
- Abstract supertype:
- Each PTY_EQUIPMENT_FACILITY must be instantiated as one of its subtypes. These subtypes are: pty_line, pty_point, pty_quantity, pty_string
- [I: property] Mandatory Relationship Set
-
Each PROPERTY must "be a property of" one object.
- [I: pty_transient_property] Instance Value Constraint
-
If REF_PERIOD_TYPE is EVENT, then both START_TIME and END_TIME must either be blank or be identical.
- [I: pty_transient_property] Instance Value Constraint
-
If REF_TRANSIENT_PERIOD is either YEAR TO DATE, MONTH TO DATE or CUMULATIVE, then END_TIME must be instantiated.
- [I: pty_transient_property] Instance Value Constraint
-
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.
- Supertype path(s):
-
process_data >
property >
pty_transient_property >
pty_equipment_facility.
e_and_p_data >
property >
pty_transient_property >
pty_equipment_facility.
Referenced in Diagrams:
Generated on Mon Dec 1 10:06:12 1997
© Copyright 1997 POSC. All rights reserved.