Which of the following statements is true of data marts and datawarehouses?

a.

Access to data is often slower in data marts than in datawarehouses because data marts are smaller.

b.

Despite being smaller, data marts can usually perform the sametype of analysis as data warehouses.

c.

Data marts have a much more extended scope than datawarehouses.

d.

Consolidating information from all of the departments is done indata marts and only 1 department's data is found datawarehouses.

incorporates many recent technologies under one platformincluding the IaaS, PaaS, software as a service (SaaS) model andWeb 2.0.

a.

Cloud computing

b.

Tunnel scanning

c.

Case-based reasoning

d.

Forward chaining