Data warehouses are often constructed using relational databases. Explain the use of fact tables and star schemas to construct a data warehouse in a relational database. Also comment on whether a transactional database can and should be used to OLAP.

Which of the following statements correctly identifies a problem with sanitization methods? a. methods are not available to remove data ensuring that unauthorized personnel cannot retrieve data.b. even fully incinerated media can offer extractable data.c. personnel can perform sanitization steps improperly.d. stored data is physically etched into the media.

Which database model is best used for data warehouse and data mining

Jackson, who works in the finance department of a company, is holding a seminar for other employees on how to file taxes. only three employees sign up to attend the seminar. which device can he use to share his presentation with a group of three employees?