Answer:In SAP ERP, there are two reportin option; they are,
List of data (work lists and online lists). Documents and analytics (analytics in SAP ERP and analytics in SAP BW (Business Warehouse)). The SAP ERP provides the above reports through information systems by using either standard or user-defined information stuctures.
Differ from one another:
The SAP BW system receives data from the SAP ERP system, other SAP systems like CRM and SRM, and other non-SAP systems. The SAP BW system is a special system from other; the data receives from other systems are stored into the SAP BW database.
Difference among reporting options in SA