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Database
Database Processing For BIS
Quiz 1
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Q.1
Formatting the report is part of authoring a report.
True
False
Q.2
Market basket analysis primarily uses the technique of conditional probabilities.
True
False
Q.3
A data mart is a collection of data that, while smaller than a data warehouse, still addresses the entire business.
True
False
Q.4
OnLine Analytical Processing (OLAP) is a BI reporting system.
True
False
Q.5
Data warehouse data are usually normalized.
True
False
Q.6
In unsupervised data mining, explanations are created after patterns are found.
True
False
Q.7
The delivery function of a report management system allows reports to be delivered via e-mail, via the Web, via XML Web services, via hand delivery and other delivery means.
True
False
Q.8
BI reporting systems summarize the current status of business activities in order to predict future activities.
True
False
Q.9
The data warehouse DBMS needs to be the same DBMS used for the operational database.
True
False
Q.10
RFM analysis is a BI reporting system.
True
False
Q.11
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.
True
False
Q.12
Business Intelligence (BI) reporting systems are used to make sophisticated mathematical and statistical calculations in order to prepare reports based on the data.
True
False
Q.13
The term neural networks as used in data mining is a misnomer.
True
False
Q.14
Report types include static, dynamic, query and OLAP.
True
False
Q.15
OLAP uses measures, dimensions and associations.
True
False
Q.16
Business Intelligence (BI) systems do not obtain data from operational databases.
True
False
Q.17
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
Q.18
In OLAP, we are interested in ________ .
levels only
dimensions only
measures only
measures and dimensions
Q.19
Which of the following is
not
a reason that operational data are difficult to read?
Non-duplicated data
Dirty data
Missing values
Non-integrated data
Q.20
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 ________ .
the basic probability
support
lift
confidence
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