1. Spreadsheets have become quite powerful for data management. What can be done with database management systems that cannot be done with spreadsheet applications? Give 2 examples. 2. What does it mean to cleanse data before it is stored in a data warehouse? 3. What is a data warehouse? How is it different from a transactional database? 4. What is blogging, and what potential does it have for businesses? 5. What is an intranet and what purposes does it serve? What is an extranet, and what purpose does it serve?