IfcUtilityResource
The resource schema IfcUtilityResource deals with the general
concepts of Ownership and Change. It also includes a basic information
construct Tables. The classes of this schema are referenced throughout the
whole IFC Object Model by all of its Model Layers as defined in the IFC
Architecture Document. The IfcUtilityResource schema consequently
contains model specifications for specifying the information content of a
number of utility types.
This schema contains the following concepts:
Ownership
Each object, relationship and type definition will provide information
about their current ownership. Ownership information is the currently "owning"
application and the owning (responsible) actor. This ownership information can
be used for access and change permissions. Ownership can be transferred from
one person to another through the life cycle of a project.
History
The history of an IFC object is captured simply in the form of last
modifying user, application and date.
Table
The specification of table is general purpose and may be used for any
two dimensional matrix type document. It allows information to be recorded in
rows and columns where each column is labeled with the type of information it
contains. The model does not allow for any mathematical operations on the
information content of a table (i.e. it does not function as a
spreadsheet).
HISTORY
The various types of registries were
removed from this schema in IFC R2.0 since the method used within applications
to store those types of information could differ between different
applications.
This schema was significantly
simplified in IFC R2x to reduce overhead. Refer to the change log and issues
resolution database for details.
