POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
This change adds surface_cable as a new subtype to general_facility.
CHANGE ESM_surface_cable ADD ENTITY surface_cable (*<desc> This is a non-structural cable located at or near the surface of the Earth, such as used for power transmission or communication.*) SUBTYPE OF (general_facility); nominal_diameter : OPTIONAL ndt_length_diameter (*<desc> This is the nominal diameter of the surface cable.*); INVERSE pty_length : SET [0:?] OF pty_length FOR surface_cable (*<desc> This is the length of the surface cable.*); UNIQUE si: identifier, identifying_facility, ref_existence_kind; END_ENTITY; ALTER ENTITY pty_length; ADD surface_cable : OPTIONAL surface_cable (*<desc> This is the surface cable this length describes.*); UNIQUE ALTER si ADD surface_cable LAST; END_ENTITY; END_CHANGE;