Please give answers to the following:

A.what is the basic definitions and concepts of data warehousing

B. describe data warehousing architectures

C. Describe the processes used in developing and managing data warehouses

D. Explain data warehousing operations

E.Explain the role of data warehouses in decision support 

F. Explain data integration and the extraction, transformation, and load (ETL) processes

G.Explain the essence of business performance management (BPM)

H.What is the balanced scorecard and Six Sigma as performance measurement systems