Why are legacy data warehouse and analytic infrastructures NOT appropriate today? (Select two.)

A.
Legacy data warehouses cannot support a Hadoop Big Data implementation.

B.
Legacy data warehouses were designed with proprietary technology, which is expensive.

C.
Legacy data warehouses were not designed to analyze data in real-time.

D.
Legacy data warehouses do not support standard SQL.

E.
Legacy data warehouses cannot interact with today’s state-of-the-art Business Intelligence
tools.

Explanation: