Top 350+ Solved Data Mining and Data Warehouse MCQ Questions Answer
Q. A definition of a concept is——if it recognizes all the instances of that concept.
a. Complete
b. Consistent
c. Constant
d. None of these
Q. A definition or a concept is ———————if it does not classify any examples as coming within the concept
a. Complete
b. Consistent
c. Constant
d. None of these
Q. Classification task referred to
a. A subdivision of a set of examples into a number of classes
b. A measure of the accuracy, of the classification of a concept that is given by a certain theory
c. The task of assigning a classification to a set of examples
d. None of these
Q. Database 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
Q. Data cleaning 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
Q. 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
Q. Data mining is
a. The actual discovery phase of a knowledge discovery process
b. The stage of selecting the right data for a KDD process
c. A subject-oriented integrated time- variant non-volatile collection of data in support of management
d. None of these
Q. Data selection is
a. The actual discovery phase of a knowledge discovery process
b. The stage of selecting the right data for a KDD process
c. A subject-oriented integrated time- variant non-volatile collection of data in support of management
d. None of these
Q. Data warehouse is
a. The actual discovery phase of a knowledge discovery process
b. The stage of selecting the right data for a KDD process
c. A subject-oriented integrated time- variant non-volatile collection of data in support of management
d. None of these
Q. Coding is
a. Group of similar objects that differ significantly from other objects
b. Operations on a database to transform or simplify data in order to prepare it for a machine-learning algorithm
c. Symbolic representation of facts or ideas from which information can potentially be extracted
d. None of these
Q. DB/2 is
a. A family of relational database manage- ment systems marketed by IBM
b. Interactive systems that enable decision makers to use databases and models on a computer in order to solve ill- structured problems
c. It consists of nodes and branches starting from a single root node. Each node represents a test, or decision.
d. None of these
Q. Decision support systems (DSS) is
a. A family of relational database management systems marketed by IBM
b. Interactive systems that enable decision makers to use databases and models on a computer in order to solve ill- structured problems
c. It consists of nodes and branches starting from a single root node. Each node represents a test, or decision.
d. None of these
Q. Decision trees is
a. A family of relational database management systems marketed by IBM
b. Interactive systems that enable decision makers to use databases and models on a computer in order to solve ill- structured problems
c. It consists of nodes and branches starting from a single root node. Each node represents a test, or decision.
d. None of these
Q. Deep knowledge referred to
a. It is hidden within a database and can only be recovered if one is given certain clues (an example IS encrypted information)
b. The process of executing implicit previously unknown and potentially useful information from dat(A)
c. An extremely complex molecule that occurs in human chromosomes and that carries genetic information in the form of genes.
d. None of these
Q. Discovery is
a. It is hidden within a database and can only be recovered if one is given certain clues (an example IS encrypted information).
b. The process of executing implicit previously unknown and potentially useful information from dat(A)
c. An extremely complex molecule that occurs in human chromosomes and that carries genetic information in the form of genes.
d. None of these