CS1: Coordinate Systems
Entity Relationship Diagram for Epicentre V3.0 Data Model Copyright (C) 2001 POSC, All Rights Reserved.
earth_feature Each coordinate_system_earth_usage must be defined for use within one and only one earth_feature. coordinate_system Each earth_feature may described using one or more coordinate_system_earth_usage. coordinate_system Each coordinate_system_earth_usage must be an area of use for one and only one coordinate_system. earth_feature Each coordinate_system may be defined for use within one or more coordinate_system_earth_usage. ref_coordinate_sys_constraint Each coordinate_system must be a kind of one and only one ref_coordinate_sys_constraint. coordinate_system Each ref_coordinate_sys_constraint may be referenced by one or more coordinate_system. first_system Each compound_coordinate_system must have as first system one and only one simple_coordinate_system. compound_first_component Each simple_coordinate_system may be utilized first in one or more compound_coordinate_system. second_system Each compound_coordinate_system must have as second system one and only one simple_coordinate_system. compound_second_component Each simple_coordinate_system may be utilized second in one or more compound_coordinate_system. constrained_to_unit Each coordinate_system_axis may be constrained to one and only one ref_unit_of_measure. coordinate_system_axis Each ref_unit_of_measure may constrain one or more coordinate_system_axis. property_kind Each coordinate_system_axis must represent one and only one property_kind. coordinate_system_axis Each property_kind may be referenced by one or more coordinate_system_axis. ref_axis_orientation Each coordinate_system_axis may have orientation defined by one and only one ref_axis_orientation. coordinate_system_axis Each ref_axis_orientation may be referenced by one or more coordinate_system_axis. coordinate_system Each coordinate_system_axis must define a part of one and only one simple_coordinate_system. coordinate_system_axis Each simple_coordinate_system may be defined by one or more coordinate_system_axis. local_context Each general_coordinate_system may be in the context of one and only one topological_object. coordinate_system_context Each topological_object may be the context for one or more general_coordinate_system. geographic_2d_coord_system Each geographic_3d_coord_system must be the source for one and only one geographic_2d_coord_system. geographic_3d_coord_system Each geographic_2d_coord_system may be derived from one and only one geographic_3d_coord_system. source_geodetic_system Each projected_2d_coordinate_system must be projection of one and only one geographic_2d_coord_system. projected_coordinate_system Each geographic_2d_coord_system may be basis for one or more projected_2d_coordinate_system. compound_coordinate_system coordinate_system coordinate_system_axis coordinate_system_earth_usage earth_feature general_coordinate_system geocentric_coordinate_system geodetic_coordinate_system geographic_2d_coord_system geographic_3d_coord_system projected_2d_coordinate_system property_kind ref_axis_orientation ref_coordinate_sys_constraint ref_unit_of_measure simple_coordinate_system topological_object vertical_coordinate_system