Structures in the Web.
Paolo Atzeni, Alessandro Masci, Giansalvatore Mecca, Paolo Merialdo, Elena Tabet · 1997
We investigate data organization in the World Wide Web. In order to extend traditional database techniques to the Web, we concentrate on stvctved 14eb sevwvs, those servers (now very common) in which data are organized according to precise structures and pages present strong regularities. The paper introduces several tools for the management of structured servers. We present a page ov{ented data model, called the ARANEUS )(t( Jod, inspired to the structures typically present in these servers. The model allows us to describe the scheme of a structured server, in the spirit of databases. Then, we develop a view definition language, called the ARANEUS /{w L(ng(g, based on the notion of v{gat{o in the scheme. It has two features: first, it allows to build relational views of the Web, which can then be queried using any relational query language; second, it allows the definition of derived Web structures from relational views. This can be used to restructure query results and access them as an hypertext or to build derived servers.