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Total Questions : 30 | Page 1 of 3 pages
Question 1. Data scrubbing is which of the following?
  1.    A process to upgrade the quality of data after it is moved into a data warehouse
  2.    A process to upgrade the quality of data before it is moved into a data warehouse
  3.    A process to reject data from the data warehouse and to create the necessary indexes
  4.    A process to load the data in the data warehouse and to create the necessary indexes
 Discuss Question
Answer: Option B. -> A process to upgrade the quality of data before it is moved into a data warehouse
Question 2. The @active data warehouse architecture includes which of the following?
  1.    At least one data mart
  2.    Data that can extracted from numerous internal and external sources
  3.    All of these
  4.    Near real-time updates
 Discuss Question
Answer: Option C. -> All of these
Question 3. An operational system is which of the following?
  1.    A system that is used to run the business in real time and is based on current data.
  2.    A system that is used to run the business in real time and is based on historical data.
  3.    A system that is used to support decision making and is based on current data.
  4.    A system that is used to support decision making and is based on historical data.
 Discuss Question
Answer: Option A. -> A system that is used to run the business in real time and is based on current data.
Question 4. A goal of data mining includes which of the following?
  1.    To analyze data for expected relationships
  2.    To confirm that data exists
  3.    To explain some observed event or condition
  4.    To create a new data warehouse
 Discuss Question
Answer: Option C. -> To explain some observed event or condition
Question 5. A data warehouse is which of the following?
  1.    Can be updated by end users.
  2.    Organized around important subject areas.
  3.    Contains only current data.
  4.    Contains numerous naming conventions and formats.
 Discuss Question
Answer: Option B. -> Organized around important subject areas.
Question 6. A snowflake schema is which of the following types of tables?
  1.    Helper
  2.    All of these
  3.    Fact
  4.    Dimension
 Discuss Question
Answer: Option B. -> All of these
Question 7. Fact tables are which of the following?
  1.    Partially normalized
  2.    Partially denoralized
  3.    Completely denoralized
  4.    Completely normalized
 Discuss Question
Answer: Option D. -> Completely normalized
Question 8. Data transformation includes which of the following?
  1.    Joining data from one source into various sources of data
  2.    A process to change data from a summary level to a detailed level
  3.    A process to change data from a detailed level to a summary level
  4.    Separating data from one source into various sources of data
 Discuss Question
Answer: Option C. -> A process to change data from a detailed level to a summary level
Question 9. Reconciled data is which of the following?
  1.    Current data intended to be the single source for all decision support systems.
  2.    Data stored in one operational system in the organization.
  3.    Data stored in the various operational systems throughout the organization.
  4.    Data that has been selected and formatted for end-user support applications.
 Discuss Question
Answer: Option A. -> Current data intended to be the single source for all decision support systems.
Question 10. The generic two-level data warehouse architecture includes which of the following?
  1.    Near real-time updates
  2.    Data that can extracted from numerous internal and external sources
  3.    At least one data mart
  4.    All of these
 Discuss Question
Answer: Option B. -> Data that can extracted from numerous internal and external sources

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