Simple PRIDE Content Model
This document sets out a very simple content model for PRIDE, listing the primary entities and
relationships that need to be considered in development of the PRIDE Directory and demonstrator.
(Note: all relationships are shown as uni-directional in the diagram. In reality they are all bi-directional,
with converse relationships going the other way. E.g., the converse of 'owns' is 'isOwnedBy'.)
The PRIDE demonstrator will enable people to obtain access to services and items. For resource discovery
(in PRIDE), items will typically be treated as parts of larger collections - i.e. discovery will happen at the
collection level, rather than at the item level. The diagram indicates that:
We can also state the following:
- Typically, a Person accesses one or more Services that, in turn, provide access to one or more
Collections made up of many individual Items.
- However, a Service may also be an end in its own right – for example a photocopying, printing or
format conversion service.
- A Service may be electronic (e.g. Web or Z39.50 based services), physical (e.g. a library or museum)
or hybrid (e.g. ILL with documents delivered by snail mail).
- In some cases a Person will use a Proxy to access a Service on their behalf.
- A Person may be a member of one or more Organisations and/or other, more loosely defined, Groups.
- A Group may be composed of one or more Organisations, may be part of a larger Organisation or may
simply be an Organisation.
- A Person may have an associated Profile.
- A Group may also have an associated Profile. A Group profile may be inherited by any Person that is
a member of the Group.
- An Organisation may own one or more Collections and offer one or more Services. In some cases a
Collection will be accessed through several Services offered by different Organisations, none of which
is the owner!
- The terms and conditions under which a Person accesses a Service, a Collection or an Item are the
subject of Deals (not shown in the diagram).
- Access to a particular Proxy may be the subject of terms and conditions over and above those
associated with access to the Service, Collection or Item.
- Deals may well be dependent on one or more of the following:
- The Service offered
- The Collection accessed
- The Item accessed
- The Organisation that owns the Collection
- The Organisation that offers the Service
- The Person accessing the Proxy, Service, Collection or Item
- The Groups of which the Person is a member
- The Proxy acting on behalf of the Person
Maintained by: Andy Powell
Last updated: 20-May-1999