Building Definition Language

A Reference points to an Entity without copying its definition.

Reference syntax shall use a controlled form:

member: @Beam_B01;

profile: @US_NJ_Residential_Profile;

References may be:

local;

imported;

Registry-based;

external-resource references;

Relationship types may include:

contains;

located_in;

connected_to;

supported_by;

supplies;

drains_to;

communicates_with;

controls;

monitors;

depends_on;

protects;

replaces;

certified_by.

Example:

relationship Beam_Node_Connection : structural_connection {

from: @Beam_B01.end_a;

to: @Node_N01.face_x_positive;

interface_profile: @S05_Structural_IF_03;

state: proposed;

}

Relationships may contain their own:

identity;

properties;

version;

state;

evidence;

Cardinality rules shall prevent invalid relationships, such as assigning one exclusive physical Interface to multiple simultaneous connections.