Accessing OOI Data

Accessing Eurostat Data

Describing Interoperability: the OoI Ontology

Though ontologies are widely used to solve some specific interoperability problems, there is no specific ontology defining what interoperability actually is, independently from any domain. In this paper, we propose and discuss a first version of such an ontology, namely the OoI (Ontology of Interoperability), which we formalized using the Ontology Web Language (OWL). On the basis of previous re...

Accessing Data in Block-Compressed Data Warehouses

The large size of most data warehouses (typically hundreds of gigabytes to terabytes), which results in non-trivial storage costs, makes compression techniques attractive for warehousing environments. In particular, block-level compression (as opposed to attribute or record level schemes) has been shown to achieve the greatest reductions in storage size for databases. A key issue is how to quic...

Accessing Data while Preserving Privacy

As organizations struggle with vast amounts of data, outsourcing sensitive data to third parties becomes a necessity. To protect the data, various cryptographic techniques are used in outsourced database systems to ensure data privacy, while allowing efficient querying. Recent attacks on such systems (e.g., [37, 30]) demonstrate that outsourced database systems must trade-off efficiency and pri...

Accessing Unstructured Data through Mobile Devices

The paper presents an on-going work on accessing unstructured data in the web through mobile devices. To achieve this we use Information Extraction (IE) to extract relevant information from unstructured documents. Here the relevant information are extracted are stored into a database, where a user can search information by giving a query through mobile. The extracted information that matches wi...