Information Technology Reference
In-Depth Information
Note that this does not mean we are restricted to a single file. The
definition includes multiple, perhaps distributed, files, or indeed a set
of network messages.
a Data Object is interpreted using Representation Information
It is important to realise that Representation Information can be any-
thing from a scribbled handwritten note, needing a human to read it,
to a complex machine readable formal description.
Representation Information is itself interpreted using further Representation
Information
Figure 3.3 denotes that Representation Information may usefully be sub-
categorised into several different types, namely Structure, Semantic and (the
imaginatively named) Other Representation Information. This breakdown is use-
ful because Structure Representation Information is often referred to as “format”;
Semantic Representation Information covers things such as ontologies and data
dictionaries; Other Representation Information is a catch-all for anything and
everything else.
Interpreted using
*
Representation
Information
1
1
*
Other
Representation
Information
Structure
Information
Semantic
Information
adds
meaning to
Fig. 3.3 Representation information object
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