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The key step of data warehouse integration is the construction of mappings that link mutually compatible components of data warehouse schemas: dimensions, aggregation levels, attributes and facts. In order to perform the integration process in a semi-automated manner, we must define similarity functions that compare the names and substructures of those structure elements. During the last decade, many...
Ontologies represents main building material for creation of semantic Web. Without ontologies it could not be possible to enable machine processability of data on the Semantic Web. Data is usually stored inside relational databases that represent the backbone for dynamical web sites. That data represents the invisible Web, ignored by search engines and Web crawlers. This paper presents a way to extract...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.