BDRV - um sistema integrador de múltiplos bancos de dados relacionais.

Abstract

The most important asset of an Organization is its information. This asset is nearly always stored in the form of operational systems, or production systems (data sources, by short). Broadly speaking, a data source works with updated and detailed data. Its main objective is to support Organization operations in the everyday life. Unfortunately, these systems do not satisfy requirements of higher information levels, namely tactical and strategic levels. Along the evolution of Information Systems, significant changes have happened with respect to the information needs for the tactical and strategic levels. Information in this case should be integrated (that is, presented as a corporate data view). In this work, we discuss the problematic of multiple data sources integration, including several information conflict types and their resolution, and we present the requirements, design and implementation of a system integrating multiple data sources, exclusively relational databases.