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Managing source schema evolution in web warehouses

... of integrated Web data. One of the main challenges in these systems is to deal with the volatile and dynamic nature of Web sources. In this work we address the effects of adding/removing/changing Web sources and ...

Publication - cat - 04/17/2013 - 05:27 - 0 comments - 0 attachments

FIESTA: A Framework for Schema Evolution in Multidimensional Databases

... http://tumb1.biblio.tu-muenchen.de/publ/diss/in/2000/blaschka.pdf Citations:  ... Processing)deploy the multidimensional data model in order to describe the application domain. Consequently, OLAP systems are ...

Publication - cat - 04/16/2013 - 18:16 - 0 comments - 1 attachment

A Randomized Approach for the Incremental Design of an Evolving Data Warehouse

... views that determine its schema and its content in terms of the schema and the content of the data sources. DW applications ... against the cost of maintaining the materialized views. In an evolving DW application, new queries need to be answered by the DW. An ...

Publication - cat - 04/16/2013 - 04:49 - 0 comments - 1 attachment

Schema evolution in data warehousing environments: a schema transformation-based approach

... 785.12 KB In heterogeneous data warehousing environments, autonomous data sources are ... data sources and the integrated database may be expressed in different modelling languages. It is possible for either the data source ... of the schema, or evolution of the modelling language in which the schema is expressed, or both. In such scenarios, it is important ...

Publication - cat - 04/15/2013 - 22:49 - 0 comments - 1 attachment