Metadata Management and Data Warehousing

Abstract

This report gives an overview of metadata management in general (Part I) and on the role of metadata for data warehousing (Part II). Because of the complexity and extensive applicability of metadata, a compact, precise definition of the notion may hardly be provided. Therefore, we explain metadata by illustrating the use and the forms it may take within various application areas. In the case of data warehousing, we present a classification of metadata along certain dimensions and we discuss significant aspects of metadata management that have to be considered for the construction of a data warehouse system. Furthermore, this report provides a comprehensive survey and analysis of the state of the art of metadata management in industry and research. The most important standards for representation and interchange of metadata, commercial products and research projects are presented and discussed (as far as the available information allows) for both, the general case and the part...

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