From Early Requirements to Late Requirements Modeling for a Data Warehouse

In recent years, a number of requirements engineering (RE) proposals for a data warehouse (DW) systems have been made. In the traditional/operational systems, requirements engineering has been divided into two phases: early & late requirements engineering phase. Most of the data warehouse requirements engineering (DWRE) approaches have not distinguished early requirements engineering phase from late requirements engineering phase. A very few approaches are seen in the literature that explicitly model early & late requirements for a DW. In this paper, we propose an agent-oriented approach having support from early requirements to late requirements modeling for a data warehouse. Here, the early requirements have been modeled through two models: organization model and goal model whereas late requirements are modeled through decision model. The proposed approach is illustrated through an example of the university for which DW is to be built to support decisional goals.