adplus-dvertising
frame-decoration

Question

What types of transformation functions are needed for data in ETL?

a.

Data cleansing and data extraction

b.

Input selection and name conversions

c.

Separation of input structures and data aggregation

d.

Data mining and data warehousing

Answer: (c).Separation of input structures and data aggregation Explanation:Types of transformation functions needed for data in ETL include separation of input structures and data aggregation.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. What types of transformation functions are needed for data in ETL?

Similar Questions

Discover Related MCQs

Q. What is the purpose of defining the initial load and update frequency in data loading?

Q. In the context of data loading, what should be defined in the requirements?

Q. What is the consequence of bad data quality in a data warehouse?

Q. What is the significance of data quality in a data warehouse?

Q. What should be identified in the early phase of requirements definition regarding data quality?

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

Q. What is the role of metadata in connecting user queries with the database components?

Q. Why might a tool that is ideally suited for one data warehouse be a complete misfit in another?

Q. What functions are tools generally available for in data warehousing?

Q. What is the role of middleware in data warehousing?

Q. What is the primary purpose of alert systems in data warehousing?

Q. What are scorecards typically used for in data warehousing?

Q. What are the typical components for which data storage specifications are needed in a data warehouse?

Q. What is the usual structure of the overall corporate data warehouse and data marts?

Q. What is one important criterion for selecting a database management system (DBMS) in the context of data warehousing?

Q. What is the role of back-end tools in the data warehousing context?

Q. In the requirements definition phase, what specific aspect of the DBMS is not discussed during interviews and formal meetings with users?

Q. What may condition the choice of a DBMS in the context of business requirements?

Q. Which factor influences the degree of openness required in the selected DBMS?

Q. What determines the strengths in the areas of data loading, recovery, and restart in a DBMS?