POSC Specifications: Epicentre Version 3.0 | Relational Implementation |
An association showing that a trace class has been classified as a member of another trace class. An trace class may be classified in many ways, both simultaneously and sequentially. Members of a class are also members of the classes of the class.
- instance_s (PK, M: CHAR VARYING(19))
- Surrogate key of the table.
- 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).
- be_classified_as_s (FSK, M: CHAR VARYING(19))
- well_log_trace_class_clsn.be_classified_as
Specifies the general class in which specific classes of traces are assigned.
Defines a foreign key to table well_log_trace_class.
- have_as_a_member_s (FSK, M: CHAR VARYING(19))
- well_log_trace_class_clsn.have_as_a_member
Specifies the trace class which is a member of a more general class.
Defines a foreign key to table well_log_trace_class.
- 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))
- association_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))
- association_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))
- association_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.
- version_s (FSK, O: CHAR VARYING(19))
- association_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, document_specification_part, @graphical_element
Primary Key Constraint on: INSTANCE_S
Fully implemented Unique Constraint on: HAVE_AS_A_MEMBER_S, BE_CLASSIFIED_AS_S
Generated on Tue Jul 10 17:15:40 2001
© Copyright 2001 POSC. All rights reserved.