Oracle Warehouse Builder (OWB) 9i is an ETL (Extract, Transform, Load) tool designed for building data warehouses and data marts. It extracts data from source systems, transforms it according to business rules, and loads it into target data warehouse structures. While OWB can integrate with reporting tools and support some ECM functions, its primary classification and purpose is ETL. EDI (Electronic Data Interchange) is unrelated to OWB's core functionality.