Hierarchical storage systems for holding objects used for evidentiary
purposes, and methods of manipulating such systems are described. A
logical store is provided and one or more physical stores are associated
with and accessible through the logical store. Access to the physical
stores can take place through the logical store with a single call to an
appropriate application programming interface. Associations within and
amongst stores can be define. One particular type of association is a
context link which enables one evidentiary object in one physical store to
get its context from another evidentiary object in another physical store.
