Here is a list of link resources on Data Warehousing and BI provides you should find useful.
Database Platforms
https://www.oracle.com/database/data-warehouse.html
BI Vendors
BI Dashboard and Scorecard examples
https://mobiledossier.microstrategy.com/MicroStrategyLibrary/app
https://demo.microstrategy.com/MicroStrategy/servlet/mstrWeb