POSC Specifications: Epicentre Version 3.0 | Relational Implementation |
This is a descriptive text that is versionable for the object it describes, that is, several different opinions about an object can be recorded, together with information about the activities that lead to the forming of these opinions, and the geoscientist/engineer concerned.
- instance_s (PK, M: CHAR VARYING(19))
- Surrogate key of the table.
- data_value (M: CHAR VARYING(2000))
- pty_descriptive_text.data_value
This contains the text that is the value in the versionable property.
- instance_create_date (O: TIMESTAMP)
- e_and_p_data.instance_create_date
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.
- last_updated (O: TIMESTAMP)
- e_and_p_data.last_updated
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).
- description (O: CHAR VARYING(2000))
- e_and_p_data.description
A remark or comment about the instance.
- instance_creator (O: CHAR VARYING(80))
- e_and_p_data.instance_creator
This is the person, company or application that created this instance. This identifies the party responsible for loading this instance.
- last_updated_by (O: CHAR VARYING(80))
- e_and_p_data.last_updated_by
This records the person or application making the update to this instance.
- preferred_flag (O: CHAR(1))
- property.preferred_flag
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.
- source (O: CHAR VARYING(80))
- e_and_p_data.source
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".
- activity_s (FSK, O: CHAR VARYING(19))
- process_data.activity
Defines the activity which created this instance.
Defines a foreign key to table activity.
- kind_s (FSK, O: CHAR VARYING(19))
- pty_descriptive_text.kind
This give the kind of descriptive property this is, by pointing to the reference entity ref_descriptive_property.
Defines a foreign key to table property_kind.
- represent_s (FSK, O: CHAR VARYING(19))
represent_t (O: CHAR VARYING(30))
- property.represent
This is the property that is the original for which this representation is an equivalent representation.
represent_s: Implements a foreign key to a row in one of the tables projected from entity property depending on the value of the next column (See below).
represent_t: Defines the name of the referenced table. Possible values are defined in @property.
- spatial_object_s (FSK, O: CHAR VARYING(19))
- pty_descriptive_text.spatial_object
Defines a foreign key to table spatial_object.
Table is related to: data_collection_content, document_specification_part, @graphical_element, process_data_item, @property
Primary Key Constraint on: INSTANCE_S
Generated on Tue Jul 10 17:36:26 2001
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