In OLAP, we are interested in ________ . measures only dimensions only levels only measures and dimensions TRUE ANSWER : ? YOUR ANSWER : ?
We have Market Basket data for 1,000 rental transactions at a Video Store. There are for videos for rent -- Video A, Video B, Video C and Video D. The probability that both Video C and Video D are rented at the same time is known as ________ . support lift confidence the basic probability TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a reason that operational data are difficult to read? Non-duplicated data Missing values Dirty data Non-integrated data TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following is not a component of a data warehouse? Data metadata Data warehouse data Data extraction/cleaning/preparation programs None of these TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following are not done by Business Intelligence (BI) systems? Neither of the above is correct. Process and record transactions only Both of the above are correct. Analyze past and current activities only TRUE ANSWER : ? YOUR ANSWER : ?
A report generated by a reporting system is delivered to the appropriate users via a user-accessed Web site. This system uses which of the following report modes? Push RFM OLAP Pull TRUE ANSWER : ? YOUR ANSWER : ?
Business Intelligence (BI) systems fall into two broad categories: reporting and data warehousing. True False TRUE ANSWER : ? YOUR ANSWER : ?
Data Mining uses simple arithmetic techniques such as sums, averages, and groupings to perform what-if analyses, to make predictions, and to facilitate decision making. True False TRUE ANSWER : ? YOUR ANSWER : ?
In a common form of RFM analysis, customers are sorted in five groups and given a score of 1 to 5 depending on their group. False True TRUE ANSWER : ? YOUR ANSWER : ?