When Does Information Cleansing Occur in the Data Warehouse

question 37

Multiple Choice

When does information cleansing occur in the data warehouse?

• A) During the ETL process.
• B) On the information, once it is in the data warehouse.
• C) During the ETL process and once it is in the data warehouse.
• D) During the ETL process and before it is in the data warehouse.

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Definitions:

Theories

Systematic sets of ideas or principles that explain phenomena and are supported by evidence.

Researchers

Researchers are individuals who conduct detailed study and systematic investigation into a specific subject, topic, or area of interest with the goal of discovering or interpreting facts, revising theories, or applying new knowledge.

Application

The act of putting something to a particular use or purpose, such as a job application, or the utilization of a concept or theory in a practical situation.

Hypotheses

Proposed explanations or predictions that can be tested by observations or experiments.