Q. How are full refreshes different from initial loads in terms of data application modes?

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Q. What are the two methods for maintaining a data warehouse and keeping it up to date after the initial load?

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Q. When might a full refresh be a better option than an update for keeping a data warehouse up to date?

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Q. What is the primary reason for converting production system keys to system-generated keys in the data warehouse?

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Q. What is the key of the fact table in a data warehouse based on?

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Q. What is the primary function of ETL (Extraction, Transformation, and Loading) in a data warehouse?

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Q. Why is data extraction for a data warehouse an ongoing function carried out at very frequent intervals?

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Q. What is the key difference between data loading in a data warehouse and data loading for a new operational system?

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Q. What role do vendor tools play in the ETL process for data warehousing?

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Q. What are the three main components of the ETL process?

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Q. Why is data transformation in a data warehouse more complex than conversion functions for operational systems?

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Q. When might a full refresh be used for data loading in a data warehouse?

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Q. Why is ongoing data extraction required in a data warehouse?

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Q. What is the primary role of data transformation in a data warehouse?

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Q. What is the ETL process, and why is it critical for data warehousing?

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Q. Which of the following ETL tool categories offers maximum flexibility for data transformations, full loads, and incremental loads?

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Q. What is the primary source of data captured through replication in ETL tools?

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Q. What is the primary role of code generators in ETL?

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Q. Which ETL tool option is offered by several DBMS vendors at little or no extra cost, making it attractive to many organizations?

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Q. What are some of the common features or capabilities provided by ETL tools?

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