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In data warehouse (DW) management, what is the BEST way to prevent data quality issues caused by changes from a source system?
Correct Answer: C
Including the data warehouse in the impact analysis for any changes in the source system is the best way to prevent data quality issues caused by changes from a source system. A data warehouse is a centralized repository of integrated data from one or more source systems. An impact analysis is a technique of assessing the potential effects and consequences of a change on the existing system or environment. Including the data warehouse in the impact analysis can help to identify and mitigate any data quality issues that may arise from changes in the source system, such as data inconsistency, incompleteness, or inaccuracy. The other options are less effective ways to prevent data quality issues, as they may involve data quality alerts, approval for changes, or access restrictions. References: * CISA Review Manual (Digital Version), Chapter 5, Section 5.41 * CISA Review Questions, Answers & Explanations Database, Question ID 226