Querying XML effectively and efficiently using declarative languages such as XQuery and XPath has been widely studied in both academic and industrial settings. Most RDBMS vendors ...
Zhen Hua Liu, Muralidhar Krishnaprasad, James W. W...
Abstract. Estimating the sizes of query results, and intermediate results, is crucial to many aspects of query processing. In particular, it is necessary for effective query optimi...
There has been lately an increased activity of publishing structured data in RDF due to the activity of the Linked Data community1 . The presence on the Web of such a huge informa...
Gianluca Correndo, Manuel Salvadores, Ian Millard,...
We present a new algorithm for mining maximal frequent itemsets from a transactional database. Our algorithm is especially efficient when the itemsets in the database are very lon...
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...