Question

What is the key difference between data in source operational systems and data in a data warehouse?

a.

Source data is fresher than data in the warehouse.

b.

Data in the warehouse is more detailed than source data.

c.

ETL functions have been applied to the data in the warehouse.

d.

Data in the warehouse is stored in different formats.

Posted under Data Warehousing and OLAP

Answer: (c).ETL functions have been applied to the data in the warehouse. Explanation:ETL functions are applied to the source data to transform it into useful information stored in the data warehouse.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. What is the key difference between data in source operational systems and data in a data warehouse?

Add Comment

Similar Questions

Discover Related MCQs

Q. Which of the following is NOT a part of the ETL process in data warehousing?

View solution

Q. Why is it important to extract only the needed data from source systems for data warehousing?

View solution

Q. What is one of the challenges associated with ETL functions in data warehousing?

View solution

Q. Which of the following best describes the primary purpose of ETL functions in data warehousing?

View solution

Q. What is the correct sequence of ETL functions?

View solution

Q. What makes ETL functions challenging in the context of source systems?

View solution

Q. Why is data quality often an issue in ETL functions?

View solution

Q. What is a common challenge in ETL due to the lack of consistency among source systems?

View solution

Q. Which of the following is a key factor that adds to the complexity of ETL functions?

View solution

Q. What is one of the challenges of data extraction in ETL functions?

View solution

Q. Which step in the ETL process involves converting data from one format in the source platform to another format in the target platform?

View solution

Q. What is the significance of planning for aggregate fact tables in the ETL process?

View solution

Q. What is one of the primary reasons for the complexity of data extraction and transformation functions in data warehousing?

View solution

Q. Why might third-party data extraction tools be preferred in data warehousing over in-house programs?

View solution

Q. What is one key factor that differentiates data extraction for data warehousing from data extraction for operational systems?

View solution

Q. What is a crucial aspect of data extraction that impacts data warehousing success?

View solution

Q. Which of the following is not an issue to consider in data extraction for a data warehouse?

View solution

Q. What is the first step in the source identification process for data extraction in a data warehouse?

View solution

Q. Why is source identification a critical process in data extraction for a data warehouse?

View solution

Q. What is a key characteristic of source data in operational systems?

View solution

View All MCQs on Data Warehousing and OLAP

Suggested Topics

Are you eager to expand your knowledge beyond Data Warehousing and OLAP? We've curated a selection of related categories that you might find intriguing.

Click on the categories below to discover a wealth of MCQs and enrich your understanding of Computer Science. Happy exploring!

Software Engineering

Learn about the systematic approach to developing software with our Software...

Systems Analysis and Design Methods

Get familiar with the process of designing and improving business systems with our...

Internet of Things (IoT)

Discover how devices communicate with each other in the smart world with our IoT...

R Programming

Unleash the power of statistical computing with our R Programming MCQs. Topics cover...

Systems Programming

Decode low-level programming with our Systems Programming MCQs. These questions delve...

MySQL Database

Enhance your knowledge of relational databases with our MySQL MCQs. Understand...

MongoDB

Learn the leading NoSQL database with our MongoDB MCQs. Understand everything from...

Formal Languages and Automata Theory

Discover the mathematical models of computation with our Formal Languages and...

Neural Networks

Dive into the world of Artificial Intelligence with our Neural Networks MCQs. Uncover...