What are the functions of databases and data ware-houses? List three types of waste or damages that data errors can cause. Why would a company invest in a data mart instead of a data warehouse? What are significant issues about 4G wireless networks?

Assignments 3 & 4:

What are the functions of databases and data ware-houses?

List three types of waste or damages that data errors can cause.

Why would a company invest in a data mart instead of a data warehouse?

What are significant issues about 4G wireless networks?