  Effective information disclosure in the context of databases with a large
conceptual schema is known to be a non-trivial problem. In particular the
formulation of ad-hoc queries is a major problem in such contexts. Existing
approaches for tackling this problem include graphical query interfaces, query
by navigation, query by construction, and point to point queries. In this
article we propose the spider query mechanism as a final corner stone for an
easy to use computer supported query formulation mechanism for InfoAssisant.
The basic idea behind a spider query is to build a (partial) query of all
information considered to be relevant with respect to a given object type. The
result of this process is always a tree that fans out over existing conceptual
schema (a spider). We also provide a brief discussion on the integration of the
spider quer mechanism with the existing query by navigation, query by
construction, and point to point query
