data mining and data ware house Practice Questions Answers Test with Solutions & More Shortcuts

data mining and data ware house PRACTICE TEST [2 - EXERCISES]

data mining & data ware house set 1

data mining & data ware house set 2

Question : 1

Primary key is

a) The result of the application of a theory or a rule in a specific case

b) One of several possible enters within a database table that is chosen by the designer as the primary means of accessing the data in the table

c) Discipline in statistics that studies ways to find the most interesting projections of multi-dimensional spaces.

d) None of these

Answer: (b)

Question : 2

Heterogeneous databases 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: (a)

Question : 3

Transparency

a) The large set of candidate solutions possible for a problem

b) The information stored in a database that can be, retrieved with a single query.

c) Worth of the output of a machinelearning program that makes it understandable for humans

d) None of these

Answer: (c)

Question : 4

Binary attribute are

a) This takes only two values. In general, these values will be 0 and 1 and they can be coded as one bit

b) The natural environment of a certain species

c) Systems that can be used without knowledge of internal operations

d) None of these

Answer: (a)

Question : 5

Hybrid learning is

a) Machine-learning involving different techniques

b) The learning algorithmic analyzes the examples on a systematic basis and makes incremental adjustments to the theory that is learned

c) Learning by generalizing from examples

d) None of these

Answer: (a)

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