Why Is Constructing a Data Warehouse More Difficult for In-Store

Multiple Choice

Why is constructing a data warehouse more difficult for in-store transactions than it is for online shopping?

A) Customer returns to the store confound the data.
B) Store purchases can be made with cash or third-party credit cards.
C) Availability of store assortments is not always similar to website assortments.
D) Store customers are not interested in sharing personal information.
E) Since customers are more likely to buy gifts for others in stores than online, it defeats the purpose of understanding the end-user.