POSC Specifications: Epicentre Version 3.0 | Relational Implementation |
An earth surface feature associated with one of a variety of classifications of land coverage, land usage, or other system. Examples include: river, forest, marsh, farmland, lake, highway, parking area.
- instance_s (PK, M: CHAR VARYING(19))
- Surrogate key of the table.
- identifier (M: CHAR VARYING(80))
- earth_feature.identifier
The identifying name for the earth feature.
- 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.
- 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".
- source_content (O: CHAR VARYING(80))
- earth_feature.source_content
This is the original source of the data. This is the person, company or application that defined or specified the data (content) for this instance and is considered to be responslble for it. For example, POSC, EPSG, API, ISO, etc. This may be the same as or different from the provider of the instance (e.g., POSC).
- source_reference (O: CHAR VARYING(2000))
- earth_feature.source_reference
The reference used by source to provide the standard instance, such as Petroleum Industry Data Dictionary (PIDD), Websters Ninth New Collegiate Dictionary, etc.
- status (O: CHAR VARYING(11))
- earth_feature.status
The status of this instance in the version of Epicentre running in a data store. This is an enumerated datatype for which the following are the possible values: current, provisional, deprecated. Current - use without restriction. Provisional - use with caution, this value is for comment and may not appear in future releases of Epicentre. Deprecated - avoid use if possible, it is planned to remove this value in the next major release of Epicentre.
- surface_only (O: CHAR(1))
- earth_feature.surface_only
When set to TRUE, this earth_feature represents only the surface of the Earth and does not extend into the subsurface.
- kind_s (FSK, O: CHAR VARYING(19))
- earth_feature.kind
The class which asserts the fundamental nature of the feature.
Defines a foreign key to table earth_feature_class.
- naming_system (FNK, O: CHAR VARYING(80))
- earth_feature.naming_system
The naming system in which the identifier is defined and unique.
Defines a foreign key to table naming_system.
- unique_within_s (FSK, O: CHAR VARYING(19))
unique_within_t (O: CHAR VARYING(30))
- earth_feature.unique_within
This is another earth feature within which this earth feature is uniquely identified.
unique_within_s: Implements a foreign key to a row in one of the tables projected from entity earth_feature depending on the value of the next column (See below).
unique_within_t: Defines the name of the referenced table. Possible values are defined in @earth_feature.
- version_s (FSK, O: CHAR VARYING(19))
- earth_feature.version
This describes the version of this instance as defined by the provider.
Defines a foreign key to table r_version.
Table is related to: activity, business_assoc_earth_ftr_role, contract_object_designation, contract_oblig_object_fulfil, coordinate_system_earth_usage, data_collection_content, derived_interest_makeup, document_specification_part, @earth_feature, earth_feature_alias, earth_feature_classification, coordinate_system, @graphical_element, guideline_compliance, bulk_material, naming_system_area, object_activity_involvement, object_remark, object_subject_to_guideline, p_avg_earth_surface_elev, p_geothermal_gradient, p_magnetic_declination, p_magnetic_inclination, p_population, p_population_density, space_time_operation, spatial_object, subject_of_contract, topological_relationship, transformation_earth_usage, well_log, well_log_trace
Primary Key Constraint on: INSTANCE_S
Generated on Tue Jul 10 16:28:48 2001
© Copyright 2001 POSC. All rights reserved.