The _______________________ represents the source data for the DW. This layer is comprised, primarily, of operational transaction processing systems and external secondary databases.
A) information access layer
B) operational and external layer
C) data access layer
D) process management layer

Question

Quizplus · Accepted Answer

The operational and external layer represents the source data for the Data Warehouse (DW). This layer includes the operational transaction processing systems and external secondary databases that provide the raw data for the DW.

The _______________________ Represents the Source Data for the DW