adplus-dvertising
frame-decoration

Question

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

a.

To reduce data extraction complexity

b.

To ensure a one-time event for data loading

c.

To accommodate changes in source systems

d.

To eliminate the need for data transformation

Answer: (c).To accommodate changes in source systems Explanation:Data extraction for a data warehouse is an ongoing function to accommodate changes in source systems and ensure data is up-to-date.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

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

Similar Questions

Discover Related MCQs

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

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

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

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

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

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

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

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

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

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

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

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

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

Q. Which ETL tool category generates program code for data extraction and transformation and allows users to add custom code for special conditions?

Q. What do ETL tools primarily use to perform data capture through replication?

Q. Which ETL tool category deals with dynamic and sophisticated data manipulation algorithms?

Q. What is the purpose of recording and managing metadata in ETL tools?

Q. In which ETL tool category do you provide parameters for data sources, target layouts, and business rules?

Q. What is the primary role of metadata in the context of ETL functions?

Q. What does ETL metadata typically contain information about?