Information Technology Reference
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Fig. 6.8 OAIS functional model
the preservation of a digital object. According to OAIS the AIP is defined to pro-
vide a concise way of referring to a set of information that has, in principle, all
the qualities needed for permanent, or indefinite, Long Term Preservation of a
designated Information Object .
It is important to realise that the AIP is a logical construct i.e. it does
not have to be a single file.
TheAIPisshowninFig. 6.9 . Note that this means that, unlike the general
Information Package, the AIP must have exactly one piece of Content Information
and one piece of PDI.
Remember that a single Information Object (i.e. Content Information
or PDI) could consist of many separate digital objects.
The full AIP is illustrated in Fig. 6.10.
There are very many ways of packaging information, both physically as well as
logically. As we will see, we must provide at least one packaging implementation
which can be used in the Testbeds in Part II. It should also be possible to provide
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