The four-stage standardized modeling method in data warehouse system development

This paper has summarized the traditional three-stage methods on relational database designing and developing according to the practical data warehousing applications, and has brought forward a new integrated method based on it, namely the four-stage standardized model, which includes conceptual modeling, logical modeling, object modeling and physical modeling. Considering that the three-stage method is unable to completely reflect the subject-oriented features of the data warehouse and describe its metadata models, this new method is obviously the reinforcement and improvement to the three-stage method, in that it displays the whole structure of the data warehouse more clearly and adapts to the modularization trend of the data warehouse modeling.