In SAP BW/BI what are the main areas and activities?

* Data Warehouse : Integrating, collecting and managing entire company’s data.
 
* Analyzing and Planning : Using the data stored in data warehouse
 
* Reporting : BI provides the tools for reporting in web-browser, Excel etc.
 
* Broad cast publishing : To send the information to the employees using email, fax etc.
 
* Performance : Performance of the company
 
* Security : Securing the access like using SAP logon tickets from portal