Select the scenario that describes a bottom-up approach to data warehouse design.
a. Jaime’s research consulting firm combines data from its clients into a central database, then redistributes the data to several individual contractors.
b. Charley’s wholesalers combines data from its produce, meat, and dry goods vendors into a centralized data warehouse, then redistributes it among several data marts.
c. Hollywood advertising combines established data marts from its San Diego, Los Angeles, and San Francisco offices into a single data warehouse.
d. Dave’s appliances, which is expanding to new locations in the city, collects data into a centralized database, and then redistributes it to three new data marts.