Q.no 11. Hidden knowledge referred to
A : A set of databases from different vendors, possibly using different database paradigms
B : An approach to a problem that is not guaranteed to work but performs well in most cases
C : Information that is hidden in a database and that cannot be recovered by a simple SQL query
D : None of these
Answer for Question No 11. is c
Q.no 12. The schema is collection of stars. Recognize the type of schema.
A : Star Schema
B : Snowflake schema
C : Fact constellation
D : Database schema
Answer for Question No 12. is c
Q.no 13. The Synonym for data mining is
A : Data warehouse
B : Knowledge discovery in database
C : ETL
D : Business Intelligemce
Answer for Question No 13. is b
Q.no 14. Which of the following are methods for supervised classification?
A : Decision tree
B : K-Means
C : Hierarchical
D : Apriori
Answer for Question No 14. is a
Q.no 15. These are the intermediate servers that stand in between a relational back-end server and client front-end tools
A : ROLAP
B : MOLAP
C : HOLAP
D : HaoLap
Answer for Question No 15. is a
Q.no 16. Color is an example of which type of attribute
A : Nominal
B : Binary
C : Ordinal
D : numeric
Answer for Question No 16. is a
Q.no 17. What are two steps of tree pruning work?
A : Pessimistic pruning and Optimistic pruning
B : Postpruning and Prepruning
C : Cost complexity pruning and time complexity pruning
D : None of the options
Answer for Question No 17. is b
Q.no 18. A data cube is defined by
A : Dimensions
B : Facts
C : Dimensions and Facts
D : Dimensions or Facts
Answer for Question No 18. is c
Q.no 19. For Apriori algorithm, what is the second phase?
A : Pruning
B : Partitioning
C : Candidate generation
D : Itemset generation
Answer for Question No 19. is a
Q.no 20. What is the range of the cosine similarity of the two documents?
A : Zero to One
B : Zero to infinity
C : Infinity to infinity
D : Zero to Zero
Answer for Question No 20. is a
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