RDF aggregate queries and views

TitleRDF aggregate queries and views
Publication TypeConference Papers
Year of Publication2005
AuthorsHung E, Deng Y, V.S. Subrahmanian
Conference NameData Engineering, 2005. ICDE 2005. Proceedings. 21st International Conference on
Date Published2005/04//
Keywordsaggregate, databases;, DBMS;, description, framework;, languages;, Maintenance, methods;, processing;, queries;, query, RDF, relational, resource, standard;, standards;, view, Web

Resource description framework (RDF) is a rapidly expanding Web standard. RDF databases attempt to track the massive amounts of Web data and services available. In this paper, we study the problem of aggregate queries. We develop an algorithm to compute answers to aggregate queries over RDF databases and algorithms to maintain views involving those aggregates. Though RDF data can be stored in a standard relational DBMS (and hence we can execute standard relational aggregate queries and view maintenance methods on them), we show experimentally that our algorithms that operate directly on the RDF representation exhibit significantly superior performance.