Question

When creating a data warehouse, is the process that extracts data from source databases, reformats the data, and stores them in the warehouse?

Answer 1

The data staging area is an area where the data from a data warehouse is copied temporarily. It is an area based on time.

For example, if you wish to copy sales data, it should be staged daily. If you want to step data for financial markets, it might be more suitable to extract it every month.

Therefore, the correct answer here is ‘data staging.’ Data staging is the process that retrieves data from source databases, reformats the data and stores them in a data warehouse.