Diretrizes para a Modelagem Incremental de Data Marts

The lack of a detailed comprehensive methodology for Data Warehouse development may be credited to fundamental differences in its requirements when compared to traditional database systems and the various approaches for the Data Warehouse architecture found in the literature. This paper presents a set of guidelines to support the incremental development of a Data Warehouse environment, created from individual Data Marts, and based on existing operational data models. These data models are integrated and transformed, deriving an initial pre-model for the Data Mart, to be refined using dimensional modeling techniques. This pre-model is the basis for the derivation and integration of each new dimensional Data Mart. Therefore, a more consistent and less empirical developing process is established.