A mathematical surface defined by revolving an ellipse around its minor (polar) axis and which approximates the surface of the earth without its topographic undulations.

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

Surrogate key of the table.


ellipsoid_id (M: CHAR VARYING(40))

ellipsoid.identifier
The identifier of an ellipsoid.


source (FNK, M: 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.


description (O: CHAR VARYING(2000))

ellipsoid.description
A description of the elipsoid.


inverse_flattening (O: FLOAT(6))

ellipsoid.inverse_flattening
The inverse of flattening. Inverse flattening may be calculated as the length of the semimajor axis over the difference in lengths of the semimajor and semiminor axes: 1/f=a/(a-b), where 1/f is the inverse flattening, a is the length of the semimajor axis, and b is the length of the semiminor axis.


semimajor_axis (O: FLOAT)
semimajor_axis_u (FNK, O: CHAR VARYING(15))

ellipsoid.semimajor_axis
Semimajor ellipsoid axis length, a.
semimajor_axis_u: Defines the unit of measure. Defines a foreign key to table r_uom.


semiminor_axis (O: FLOAT)
semiminor_axis_u (FNK, O: CHAR VARYING(15))

ellipsoid.semiminor_axis
Semiminor ellipsoid axis length, b.
semiminor_axis_u: Defines the unit of measure. Defines a foreign key to table r_uom.


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.


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

ellipsoid.ref_naming_system
The naming system in which the identifier is defined.
Defines a foreign key to table r_naming_system.


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.