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

Question : 6

Data dictionary is

a) Large collection of data mostly stored in a computer system

b) The removal of noise errors and incorrect input from a database

c) The systematic description of the syntactic structure of a specific database. It describes the structure of the attributes the tables and foreign key relationships.

d) None of these

Question : 7

Hybrid is

a) Combining different types of method or information

b) Approach to the design of learning algorithms that is structured along the lines of the theory of evolution.

c) Decision support systems that contain an Information base filled with the knowledge of an expert formulated in terms of if-then rules.

d) None of these

Question : 8

Subject orientation

a) The science of collecting, organizing, and applying numerical facts

b) Measure of the probability that a certain hypothesis is incorrect given certain observations.

c) One of the defining aspects of a data warehouse, which is specially built around all the existing applications of the operational dat(A)

d) None of these

Question : 9

Cache is

a) It is a memory buffer that is used to store data that is needed frequently by an algorithm in order to minimize input/ output traffic

b) The number of different values that a given attribute can take

c) A mathematical conception of space where the location of a point is given by reference to its distance from two or three axes intersecting at right angles

d) None of these

Question : 10

Unsupervised algorithms

a) It do not need the control of the human operator during their execution.

b) An arrow in a multi-dimensional space. It is a quantity usually characterized by an ordered set of scalars.

c) The validation of a theory on the basis of a finite number of examples.

d) None of these