Browsing by Author "Zimányi, Esteban"
Now showing items 1-7 of 7
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A cost model for random access queries in document stores
Hewasinghage, Moditha Lakshan Dharmasir; Abelló Gamazo, Alberto; Varga, Jovan; Zimányi, Esteban (2021-07)
Article
Open AccessDocument stores have become one of the key NoSQL storage solutions. They have been widely adopted in different domains due to their ability to store semi-structured data and expressive query capabilities. However, ... -
A framework for building OLAP cubes on graphs
Ghrab, Amine; Romero Moral, Óscar; Skhiri, Sabri; Vaisman, Alejandro; Zimányi, Esteban (Springer, 2015)
Conference report
Open AccessGraphs are widespread structures providing a powerful abstraction for modeling networked data. Large and complex graphs have emerged in various domains such as social networks, bioinformatics, and chemical data. However, ... -
Automated database design for document stores with multicriteria optimization
Hewasinghage, Moditha Lakshan Dharmasir; Nadal Francesch, Sergi; Abelló Gamazo, Alberto; Zimányi, Esteban (Springer, 2023-03-11)
Article
Open AccessDocument stores have gained popularity among NoSQL systems mainly due to the semi-structured data storage structure and the enhanced query capabilities. The database design in document stores expands beyond the first normal ... -
Managing polyglot systems metadata with hypergraphs
Hewasinghage, Moditha Lakshan Dharmasir; Abelló Gamazo, Alberto; Varga, Jovan; Zimányi, Esteban (Elsevier, 2021-07)
Article
Open AccessA single type of data store can hardly fulfill every end-user requirements in the NoSQL world. Therefore, polyglot systems use different types of NoSQL datastores in combination. However, the heterogeneity of the data ... -
Managing polyglot systems metadata with hypergraphs
Hewasinghage, Moditha Lakshan Dharmasir; Varga, Jovan; Abelló Gamazo, Alberto; Zimányi, Esteban (2018)
Conference report
Open AccessA single type of data store can hardly fulfill every end-user requirements in the NoSQL world. Therefore, polyglot systems use different types of NoSQL datastores in combination. However, the heterogeneity of the data ... -
Multidimensional integration of RDF datasets
Behan, Jam Jahanzeb Khan; Romero Moral, Óscar; Zimányi, Esteban (Springer, 2019)
Conference lecture
Open AccessData providers have been uploading RDF datasets on the web to aid researchers and analysts in finding insights. These datasets, made available by different data providers, contain common characteristics that enable their ... -
TopoGraph: an end-to-end framework to build and analyze graph cubes
Ghrab, Amine; Romero Moral, Óscar; Skhiri, Sabri; Zimányi, Esteban (2021-02)
Article
Open AccessGraphs are a fundamental structure that provides an intuitive abstraction for modeling and analyzing complex and highly interconnected data. Given the potential complexity of such data, some approaches proposed extending ...