... 180 KB In order to formulate a meaningful XML query, a user must have some knowledge ... assumed by the user, thus causing the query to fail. In this paper, we try to solve this query and data schema mismatching problem ...
Publication - huliganka - 04/16/2013 - 23:49 - 0 comments - 1 attachment
... Venue: In Proceedings of the Symposium on Principles of Database Systems (PODS), pages ... have recently been investigated for relational data.In this paper, we start looking into the basic properties of XML data exchange, ...
Publication - hartung - 04/16/2013 - 22:16 - 0 comments - 1 attachment
... ad-hoc information sharing between autonomous peers in a dynamic environment. Automating their discovery is one of the ...
Publication - huliganka - 04/16/2013 - 21:16 - 0 comments - 1 attachment
... heterogeneities between autonomous data sources are key in the emerging networked world. Our doctoral research investigates ... ad-hoc information sharing between autonomous peers in a dynamic environment. Automating their discovery is one of the ...
Publication - huliganka - 04/16/2013 - 21:16 - 0 comments - 1 attachment
... where data items originated, but also why they appear in the integration as they do and through what transformation they were derived. This problem is known as data provenance. In this work, we consider data provenance at the schema and mapping level. In ...
Publication - huliganka - 04/16/2013 - 20:49 - 0 comments - 1 attachment
... XML documents and databases has become a critical problem. In this paper, we present a hybrid schema match algorithm - QMatch - that ... while exploiting additional information inherent in XML documents such as the order of XML elements to provide improved levels ...
Publication - huliganka - 04/16/2013 - 20:16 - 0 comments - 1 attachment
... has now become a prominent area of database research. In this article, we first review database applications that require semantic ... and identify open research issues. We will focus in particular on schema matching, a topic that has received much attention in ...
Publication - admin - 04/16/2013 - 15:38 - 0 comments - 1 attachment
... a formal framework for investigating information flow in peer-to-peer database management systems. Data maps constitute effective ...
Publication - admin - 04/16/2013 - 14:38 - 0 comments - 1 attachment
... when given simple correspondences from table columns in a relational schema to datatype properties of classes in an on- tology. Although the algorithm presented is necessarily heuristic, ...
Publication - admin - 04/16/2013 - 14:05 - 0 comments - 1 attachment
... 202.75 KB . Much data is published on the Web in XML format satisfying schemas, and to make the Semantic Web a reality, such ... from XML schema attributes to datatype properties in the ontology. To accomplish this, we first offer a mapping formalism to ...
Publication - admin - 04/16/2013 - 13:49 - 0 comments - 1 attachment
... is the problem of identifying corresponding elements in different schemas. Discovering these correspondences or matches is ... rather poorly due to the lack ofsufficient evidence in the schemas being matched. In this paper we show how a corpus of schemas and mappings can be used to ...
Publication - admin - 04/16/2013 - 13:38 - 0 comments - 1 attachment
... framework we developed for modeling uncertainty in semantic web. In this approach, the source and target ontologies are first translated into ...
Publication - admin - 04/16/2013 - 13:27 - 0 comments - 1 attachment
... Schemas evolve over time to accommodate the changes in the information they represent. Such evolution causes invalidation of ... depending on the schemas, such as schema mappings. In a heterogenous environment, where cooperation among data sources depends ...
Publication - cat - 04/16/2013 - 09:16 - 0 comments - 1 attachment
... require that mappings be executable, expressed in SQL, XSLT, or other data transformation languages. In this paper, we develop a semantics for model-management operators that ...
Publication - admin - 04/16/2013 - 03:27 - 0 comments - 1 attachment
... data integration, and other data management tasks. In many applications, mappings are given by embedded dependencies. In this paper, we study the issues involved in composing such mappings. Our ...
Publication - cat - 04/16/2013 - 03:16 - 0 comments - 1 attachment
