Q. In which scenario is the "destructive merge" mode applicable when applying data to a data warehouse table?

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution