Class Name: Classification Data
Subclasses
This DRM class is concrete and has no subclasses.
Definition
An instance of this DRM class specifies an ECC indicating what
the DRM object to which the <Classification Data> instance
is being applied represents. If the ECC requires elaboration by
EACs, the <Classification Data> instance may have
elaborating <Property Value> components.
<Classification Data> instances
are used in three different contexts:
-
A <Classification Data> instance can be a component of
an <EDCS Use Summary Item> instance
(see that class for an explanation of its usage).
-
If X is an instance of a DRM class
other than <EDCS Use Summary Item>
and X has a <Classification Data>
instance as a component,
the <Classification Data>
instance specifies what X represents.
-
If X and Y
are DRM objects such that X has
Y as a component
through a <Classification Data> link object
on the relationship, the <Classification Data>
link object specifies what Y
represents. For this case, see the
<Classification Related Features>
class and the
<Classification Related Geometry>
class for a more detailed discussion.
Primary Page in DRM Diagram:
Secondary Pages in DRM Diagram:
Example
A <Classification Data> instance
with tag = ECC_DRIVE_IN_THEATRE
or ECC_ROAD.
A <Classification Data> instance
with tag = ECC_BUILDING,
elaborated with a <Property Value> component
specifying meaning
EAC_BUILDING_FUNCTION and
value EEC_BLDGFN_CASTLE
is depicted in Figure 6.3:
Figure 3 — <DRM Classification Data> example
FAQs
-
Where can users find a list of ECCs?
See the
ECCs section
of Part 4, volume 17 of the SEDRIS Documentation Set.
-
Why not just attach an elaborating
<Property Value> component
to the classified object?
Because that would represent an attribute of the object instead
of an elaboration of the classifying concept.
-
How can a data consumer determine which version of EDCS was
used to produce a given transmittal?
The Level 0 API has a function that provides this information:
SE_GetTransmittalVersionInformation()
Constraints
Composed of (two-way)
Component of (two-way)
Inherited Field Elements
This class has no inherited field elements.
Notes
Fields Notes
The tag field specifies the ECC.
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