Question
a.
Aggregate by "city" due to its lower number of values.
b.
Aggregate by "hotel" due to its higher number of values.
c.
Do not aggregate by either "city" or "hotel."
d.
Aggregate by both "city" and "hotel."
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. In a hotel chain schema, if the "city" attribute has 25,000 values and "hotel" has 15,000 values, what is the recommendation regarding aggregation?
Similar Questions
Discover Related MCQs
Q. What is the primary goal of aggregation in a data warehouse environment?
View solution
Q. What is a practical approach when designing aggregation strategies in a data warehouse?
View solution
Q. What drives the need for summarization and aggregation in a data warehouse?
View solution
Q. What does a family of STAR schemas consist of?
View solution
Q. What is typically shared among the fact tables in a family of STAR schemas?
View solution
Q. In what kind of business would it make sense to have families of STAR schemas consisting of transaction and snapshot schemas?
View solution
Q. In which type of business does it make sense to have a schema capturing transaction data that supports strategic decision making and revenue analysis?
View solution
Q. What kind of data analysis is primarily supported by a transaction schema?
View solution
Q. What kind of questions are typically addressed by a snapshot schema in a telephone company's data warehouse?
View solution
Q. In a bank's data warehouse, what does the core fact table typically contain?
View solution
Q. In a family of STARS with core and custom tables, what is the purpose of the custom fact tables?
View solution
Q. What is the primary advantage of using core and custom tables in a data warehouse for businesses with diverse products and services?
View solution
Q. In a manufacturing business, what are the typical steps through which a product travels before becoming finished goods?
View solution
Q. What is the primary purpose of creating STAR schemas for different steps in a value chain in a business?
View solution
Q. In a healthcare institution, what kind of structure is often observed when adding value to patient services?
View solution
Q. What are some units that may be part of the value circle of a large health maintenance organization?
View solution
Q. What are conformed dimensions in the context of data warehousing?
View solution
Q. What is a key requirement for dimensions to be considered conformed in a data warehouse?
View solution
Q. What is one of the key requirements for standardizing facts in data warehousing?
View solution
Q. Which of the following is an example of a type of fact that needs to be standardized?
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!
