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pro vyhledávání: '"Damigos, Matthew"'
In this paper, we investigate the problem of evaluating Basic Graph Patterns (BGP, for short, a subclass of SPARQL queries) over dynamic Linked Data graphs; i.e., Linked Data graphs that are continuously updated. We consider a setting where the updat
Externí odkaz:
http://arxiv.org/abs/2209.10272
As RDF becomes more widely established and the amount of linked data is rapidly increasing, the efficient querying of large amount of data becomes a significant challenge. In this paper, we propose a family of algorithms for querying large amount of
Externí odkaz:
http://arxiv.org/abs/2209.05359
Autor:
Afrati, Foto N., Damigos, Matthew
In this paper, we consider a tree-structured data model used in many commercial databases like Dremel, F1, JSON stores. We define identity and referential constraints within each tree-structured record. The query language is a variant of SQL and flat
Externí odkaz:
http://arxiv.org/abs/2102.06563
Autor:
Afrati, Foto N., Damigos, Matthew
We often add arithmetic to extend the expressiveness of query languages and study the complexity of problems such as testing query containment and finding certain answers in the framework of answering queries using views. When adding arithmetic compa
Externí odkaz:
http://arxiv.org/abs/2008.10986
Publikováno v:
In Information Systems May 2023 115
Publikováno v:
In Information Systems June 2014 42:153-176
Publikováno v:
International Journal of Metadata, Semantics and Ontologies; 2020, Vol. 14 Issue: 1 p63-80, 18p
Publikováno v:
ACM International Conference Proceeding Series; 10/2/2014, p1-6, 6p
Publikováno v:
New Trends in Databases & Information Systems (9783319018621); 2014, p69-77, 9p
Publikováno v:
Data Management in Cloud, Grid & P2P Systems (9783642400520); 2013, p51-62, 12p