Which of the following is not a reason that operational data are difficult to read? Non-integrated data Non-duplicated data Missing values Dirty data TRUE ANSWER : ? YOUR ANSWER : ?
BI reporting systems summarize the current status of business activities in order to predict future activities. True False TRUE ANSWER : ? YOUR ANSWER : ?
Business Intelligence (BI) reporting analyses can be performed using ________ . extensions to SQL only OLAP only both standard SQL and extensions to SQL standard SQL only TRUE ANSWER : ? YOUR ANSWER : ?
Most operational databases can be used for many BI applications. True False TRUE ANSWER : ? YOUR ANSWER : ?
We have Market Basket data for 1,000 rental transactions at a Video Store. There are four videos for rent -- Video A, Video B, Video C and Video D. The probability that Video D will be rented given that Video C has been rented is known as ________ . confidence the basic probability support lift TRUE ANSWER : ? YOUR ANSWER : ?
Business Intelligence (BI) reporting systems are used to make sophisticated mathematical and statistical calculations in order to prepare reports based on the data. False True 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 ________ . lift confidence the basic probability support TRUE ANSWER : ? YOUR ANSWER : ?
Business Intelligence (BI) systems do not obtain data from operational databases. True False TRUE ANSWER : ? YOUR ANSWER : ?
In unsupervised data mining, explanations are created after patterns are found. False True TRUE ANSWER : ? YOUR ANSWER : ?