Giornata XML e database
Pisa,25 ottobre 2002 - Area della Ricerca CNR
Programma della giornata
Issues in Accessing XML Data
Fausto Rabitti
(ISTI-CNR)
e
Implementing efficient XML query processing in the ECD
project
Giuseppe Amato
(ISTI-CNR)
Abstract
Processing XML queries mainly involves matching the structure
of the queries against the structure of XML documents in
addition to content matching. Techniques developed for
traditional databases, such as relational database systems,
have shown high inefficiency when dealing with hierarchical
structures. In fact, path traversal and containment queries
are translated into long sequences of joins, which make
simple query processing impracticable. In addition, boolean
retrieval, both for structure and content match, is also not
sufficient in this context. Users should be provided with
query languages that offer the possibility of expressing
uncertainty and to retrieve information also by similarity.
We will discuss techniques developed at CNR for efficient XML
query processing and for XML search by similarity.
La presentazione di Rabitti
La presentazione di Amato
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