A collection of fine pieces of wood from around the WikiDom (and possibly the WebTwoPointOh).
From Wikipedia's entry on object databases:
"Benchmarks between ODBMSs and relational DBMSs have shown that ODBMS can be clearly superior for certain kinds of tasks. The main reason for this is that many operations are performed using navigational rather than declarative interfaces, and navigational access to data is usually implemented very efficiently by following pointers." (http://en.wikipedia.org/wiki/Object_database)