POSC Specifications: Epicentre Version 3.0 | Relational Implementation |
The method used for the coordinate transformation, such as Lambert Conic Conformal, Transverse Mercator, Bursa-Wolf, NADCON, etc. This defines a particular transformation method for which parameters and their usage are specifically described.
- instance_s (PK, M: CHAR VARYING(19))
- Surrogate key of the table.
- identifier (M: CHAR VARYING(80))
- technical_reference.identifier
The name of the instance.
- 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).
- reverse_transform_valid (M: CHAR(1))
- transformation_method.reverse_transform_valid
TRUE indicates that the reverse transform is valid using the same parameters. FALSE indicates that the reverse transform is not valid.
- 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.
- sign_reversal (O: CHAR(1))
- transformation_method.sign_reversal
TRUE indicates that the sign of the transformation parameter values must be reversed in order to perform a reverse transformation. FALSE indicates that the sign of the transformation parameter values must not be reversed in order to perform a reverse transformation.
- 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))
- technical_reference.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 responsible 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))
- technical_reference.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))
- technical_reference.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.
- naming_system (FNK, O: CHAR VARYING(80))
- aliasable_technical_reference.naming_system
The naming system in which the identifier is specified and determined to be unique.
Defines a foreign key to table naming_system.
- version_s (FSK, O: CHAR VARYING(19))
- technical_reference.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: data_collection_content, derived_interest_makeup, document_specification_part, @graphical_element, coordinate_transformation, object_activity_involvement, technical_reference_alias, transformation_parameter_usage
Primary Key Constraint on: INSTANCE_S
Fully implemented Unique Constraint on: IDENTIFIER
Generated on Tue Jul 10 17:06:59 2001
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