- BI -> Business Intelligence (Reporting and Analysis)
- OLAP: Online Analytical Process (SAP BI)
- OLTP: Online Transaction Process (SAP SD, MM, FICO, ABAP, HR)
- BI is a data warehousing tool
- ETL: Extraction > Transformation > Loading
- BI is used by middle level and high level management
- PSA (Persistent Storage Area): Used to correct errors.