Question
a.
To simplify data extraction
b.
To reduce data storage costs
c.
Because data in a data warehouse comes from multiple source systems
d.
To improve data querying and analysis
Posted under Data Warehousing and OLAP
Engage with the Community - Add Your Comment
Confused About the Answer? Ask for Details Here.
Know the Explanation? Add it Here.
Q. Why is a separate staging area necessary for preparing data for a data warehouse?
Similar Questions
Discover Related MCQs
Q. In some cases, particularly with old legacy systems, what type of staging area might be required?
View solution
Q. What is the purpose of data extraction in the staging area?
View solution
Q. Why might a data warehouse implementation team choose to use in-house programs for data extraction instead of outside tools?
View solution
Q. Where is the source data extracted into after the extraction function in the staging area?
View solution
Q. What is the primary purpose of data transformation in the context of a data warehouse?
View solution
Q. Why is data transformation for a data warehouse more challenging than for an operational system?
View solution
Q. What is the primary objective of cleaning data during the data transformation process?
View solution
Q. What is semantic standardization in the context of data transformation?
View solution
Q. Which of the following is NOT a part of data transformation?
View solution
Q. Why are primary keys in a data warehouse different from those in operational systems?
View solution
Q. What does the data transformation function include when data needs to be summarized in the data warehouse?
View solution
Q. What is the outcome of the data transformation function in the data staging area?
View solution
Q. What is the primary distinction between the initial data loading and ongoing data loading into a data warehouse?
View solution
Q. Why is the data storage for a data warehouse kept separate from the data storage for operational systems?
View solution
Q. What distinguishes data storage for operational systems from data storage for a data warehouse?
View solution
Q. Why is it important for data in a data warehouse to be stable and represent snapshots at specified periods?
View solution
Q. What is the primary purpose of multidimensional database management systems (MDDBs) in data warehouses?
View solution
Q. What type of databases are commonly employed in most data warehouses?
View solution
Q. Who typically needs prepackaged reports and preset queries from the data warehouse?
View solution
Q. Which type of user needs information once in a while, not regularly, and also requires prepackaged information?
View solution
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!
