Why and where: A characterization of data provenance
With the proliferation of database views and curated data-bases, the issue of data
provenance-where a piece of data came from and the process by which it arrived in the …
provenance-where a piece of data came from and the process by which it arrived in the …
RQL: a declarative query language for RDF
G Karvounarakis, S Alexaki, V Christophides… - Proceedings of the 11th …, 2002 - dl.acm.org
Real-scale Semantic Web applications, such as Knowledge Portals and E-Marketplaces,
require the management of large volumes of metadata, ie, information describing the …
require the management of large volumes of metadata, ie, information describing the …
[PDF][PDF] Answering XML Queries on Heterogeneous Data Sources.
I Manolescu, D Florescu, D Kossmann - Vldb, 2001 - vldb.org
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TAX: A tree algebra for XML
Querying XML has been the subject of much recent investigation. A formal bulk algebra is
essential for applying database-style optimization to XML queries. We develop such an …
essential for applying database-style optimization to XML queries. We develop such an …
[PDF][PDF] Querying XML views of relational data
J Shanmugasundaram, J Kiernan, EJ Shekita, C Fan… - VLDB, 2001 - vldb.org
XML has emerged as the standard data exchange format for Internet-based business
applications. This has created the need to publish existing business data, stored in relational …
applications. This has created the need to publish existing business data, stored in relational …
Minimization of tree pattern queries
S Amer-Yahia, SR Cho, LVS Lakshmanan… - ACM SIGMOD …, 2001 - dl.acm.org
Tree patterns forms a natural basis to query tree-structured data such as XML and LDAP.
Since the efficiency of tree pattern matching against a tree-structured database depends on …
Since the efficiency of tree pattern matching against a tree-structured database depends on …
A general technique for querying XML documents using a relational database system
J Shanmugasundaram, E Shekita, J Kiernan… - ACM Sigmod …, 2001 - dl.acm.org
There has been recent interest in using relational database systems to store and query XML
documents. Each of the techniques proposed in this context works by (a) creating tables for …
documents. Each of the techniques proposed in this context works by (a) creating tables for …
Integrating diverse information management systems: A brief survey
S Raghavan, H Garcia-Molina - 2001 - ilpubs.stanford.edu
Most current information management systems can be classified into text retrieval systems,
relational/object database systems, or semistructured/XML database systems. However, in …
relational/object database systems, or semistructured/XML database systems. However, in …
Acid-type catalytic properties of heteropolyacid H3PW12O40 supported on various porous silica-based materials
F Marme, G Coudurier, JC Védrine - Microporous and mesoporous …, 1998 - Elsevier
In order to obtain highly dispersed heteropolyacid species, H3PW12O40 (HPA) was
supported on various silica-based supports. Three lamellar silicates were used: a natural …
supported on various silica-based supports. Three lamellar silicates were used: a natural …
A Web odyssey: from Codd to XML
V Vianu - Proceedings of the twentieth ACM SIGMOD-SIGACT …, 2001 - dl.acm.org
The Web presents the database area with vast opportunities and commensurate challenges.
Databases and the Web are organically connected at many lev els. Web sites are …
Databases and the Web are organically connected at many lev els. Web sites are …