From: "Olaf Brandt" <[log in to unmask]>
> I wonder if we should recommend a generic namespace for the different
> versions of entities. It could be useful if some institutions use only
> some parts of the PREMIS schema separately (e.g. only the Event entity
> shema) in common.
> A namespace could look like this: http://www.loc.gov/premis/v1/Object-v1-1
If I understand the suggestion, it's to use separate namespaces for the
different schemas (container + 4 entity schemas thus five namespaces).
The container schema *includes* the entity schemas:
(e.g. <xs:include schemaLocation="Object-v1-0.xsd" /> etc).
Inclusion requires a common namespace - the including and included schemas
must have the same target namespace. So all five namespaces need to be the
(Now, if the design had been based on importation, rather than inclusion,
this restriction would not hold. But importation brings more complexities
that I'm sure Premis would rather not deal with.)
The single-namespace does not present any restriction against using any of
the entity schemas separately.