Do research to find three different estimates of the rate at which the amount of data in our digital universe is growing. Discuss why these estimates differ.. Describe the role of a database...

Do research to find three different estimates of the rate at which the amount of data in our digital universe is growing. Discuss why these estimates differ.. Describe the role of a database administrator. What skills, training, and experiences are necessary to fulfill this role? How does this differ from the role of a data administrator? What about the role of a data steward? Is any one of these roles of interest to you? Why or why not?.