Data Mining & Data Ware House Questions and Answers

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Q21
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
Answer: Option C
Q22
Database is
  • A Large collection of data mostly stored in a computer system
  • B The removal of noise errors and incorrect input from al 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
Answer: Option A
Q23
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
Answer: Option B
Q24
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 syntatic structure of a specific database. It describes the structure of the attributes the tables and foreign key relationships.
  • D None of these
Answer: Option C
Q25
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-vilatile collection of data in support of management
  • D None of these
Answer: Option A
Q26
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
Answer: Option B
Q27
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 management
  • D None of these
Answer: Option C
Q28
Coding is
  • A Group of similar objects that differ signifiantly from other objects
  • B Operations on al database to transform or simplify data in order to prepare it for a machine-learning algorithmq
  • C Symblic representation of facts or ideal from which information can potentially be extracted
  • D None of these
Answer: Option B
Q29
DB/2
  • A A family of relational database management systems marketed by IBM
  • B Interactive systems that enabled 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. Ech node represents a test, or decision.
  • D None of these
Answer: Option A
Q30
Decision support systems (DSS) is
  • A A family of relational database management systems marketed by IBM
  • B Interactive systems that enable deision 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
Answer: Option B

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