The utilization of a property variable as an axis by a coordinate system.

cord_sys_axis_s (PK, M: CHAR VARYING(19))

Surrogate key of the table.


r_property_type_nm (FNK, M: CHAR VARYING(40))

coordinate_system_axis.ref_quantity_property
The (quantity) property that is described by the axis.
Defines a foreign key to table r_quantity_pty.


entity_type_nm (M: CHAR VARYING(40))

Column that contains the name of the entity that this row is an instance of in case a table represents multiple entities. Possible values are: general_coordinate_system_axis, measured_depth_system_axis, vertical_depth_system_axis, vertical_time_system_axis.


description (O: CHAR VARYING(2000))

coordinate_system_axis.description
A remark about the coordinate system axis.


status (O: CHAR VARYING(11))

reference_behavior.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.


cord_sys_id (FNK, O: CHAR VARYING(40))
cord_sys_id_l (O: INTEGER)

coordinate_system.coordinate_system_axis
This is the list of coordinate system axes that make up this coordinate system. The order of the axes is significant and is defined by the list structure of this relationship. An axis may not be used more than once in a coordinate system.
cord_sys_id: Defines a foreign key to table coordinate_sys.
cord_sys_id_l: Provides the ordering of rows.


measurement_dtm_s (FSK, O: CHAR VARYING(19))
measurement_dtm_t (O: CHAR VARYING(16))

vertical_depth_system_axis.measurement_datum
The vertical datum that is used to define the origin of the vertical axis. This is the place of zero height or depth. For an axis used to give depth below sea level, this points to the vertical datum that represents sea level.
measurement_dtm_s: Implements a foreign key to a row in one of the tables projected from entity vertical_datum depending on the value of the next column (See below).
measurement_dtm_t: Defines the name of the referenced table. Possible values are: geodetic_datum, geoid, local_vert_dtm, vert_ref_dtm (@vertical_datum).


normal_to_datum_s (FSK, O: CHAR VARYING(19))
normal_to_datum_t (O: CHAR VARYING(16))

vertical_depth_system_axis.normal_to_datum
The vertical datum that the vertical depth system axis is defined as normal to. This allows a precise description of what is meant by vertical. Note: the vertical distance between an ellipsoid and a geoid may be different when measured normal to the ellipsoid than when measured normal to the geoid.
normal_to_datum_s: Implements a foreign key to a row in one of the tables projected from entity vertical_datum depending on the value of the next column (See below).
normal_to_datum_t: Defines the name of the referenced table. Possible values are: geodetic_datum, geoid, local_vert_dtm, vert_ref_dtm (@vertical_datum).


r_axis_ornt_kind (FNK, O: CHAR VARYING(40))

coordinate_system_axis.ref_axis_orientation
The orientation of the axis with respect to previously defined axes in the coordinate system. Each axis is oriented as "right-handed" or "left-handed".
Defines a foreign key to table r_axis_ornt.


r_vaxis_ornt_name (FNK, O: CHAR VARYING(40))

vertical_depth_system_axis.ref_vertical_axis_orientation
The vertical orientation of the coordinate system axis. This orientation is either "upward" or "downward", with "downward" defined as towards the center of the Earth. The axis for the true vertical location system is always oriented "downward", meaning that increasing values move deeper into the Earth. The axis for the elevation location system is always oriented "upward", meaning that increasing values move away from the center of the Earth.
Defines a foreign key to table r_vaxis_ornt.


source (FNK, O: CHAR VARYING(40))

reference_behavior.source
The provider of this instance of reference information. If this instance is provided by POSC, then this attribute must be "POSC".
Defines a foreign key to table r_source.


source_reference_s (FSK, O: CHAR VARYING(19))

reference_behavior.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.
Defines a foreign key to table r_source_ref.


version (FNK, O: CHAR VARYING(40))

reference_behavior.version
Describes the version of Epicentre when this status was assigned to this instance of reference behavior
Defines a foreign key to table r_epcnt_version.


vertical_datum_s (FSK, O: CHAR VARYING(19))
vertical_datum_t (O: CHAR VARYING(16))

measured_depth_system_axis.vertical_datum
This is the vertical datum that defines where this axis has a measured depth value of zero.
vertical_time_system_axis.vertical_datum
The vertical datum which locates the origin of the time axis in space. The transform from the time axis to a length axis requires a "method" involving a potentially complicated velocity function.
vertical_datum_s: Implements a foreign key to a row in one of the tables projected from entity vertical_datum depending on the value of the next column (See below).
vertical_datum_t: Defines the name of the referenced table. Possible values are: geodetic_datum, geoid, local_vert_dtm, vert_ref_dtm (@vertical_datum).