You can do Boolean or fuzzy searches, as well as searches by attribute or content, and you can specify the scope. Results are provided as a list, ranked by the server' estimate of each document' s relevance. These are related, of course, because data can be distributed across multiple servers. The basic item of a Hyper-G database is a document cluster rather than a single document. In Hyper-G, documents can stand alone but are most often considered as document clusters, which can group different representations or versions of the same document.
Clusters are themselves organised in collections managed by the server.
Searches can locate and access documents in the same collection, in parent collections, and in unconnected collections. Document clusters in Hyper-G are combined into collections. A collection can be part of one or more parent collections. Collections can span multiple Hyper-G servers. A Hyper-G server keeps track of object attributes, arranges collections, and connects clients with the link database.