Question
a.
Each entry in the bitmap contains one bit for each distinct value, and the bit is set to 1 if the value is present
b.
Each entry in the bitmap contains one byte for each distinct value, and the byte is set to the ASCII code of the value
c.
Each entry in the bitmap contains one character for each distinct value, and the character represents the value
d.
Each entry in the bitmap contains one integer for each distinct value, and the integer is set to 0 if the value is present
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. How is a bitmap index constructed for a column with distinct values?
Similar Questions
Discover Related MCQs
Q. In a bitmapped index, how is the result set determined for a query with multiple predicates?
View solution
Q. What is a disadvantage of bitmapped indexes?
View solution
Q. In a data warehouse environment, when are bitmapped indexes more suitable than B-Tree indexes?
View solution
Q. What is a recommended indexing strategy for dimension tables in a data warehouse?
View solution
Q. When considering multicolumn indexes for dimension tables, what should be considered for arranging columns?
View solution
Q. Which technique enables more data to be loaded into a single block, improving data retrieval performance?
View solution
Q. What is a key advantage of data partitioning in a data warehouse?
View solution
Q. Why is planning for partitioning crucial in a data warehouse?
View solution
Q. What is the primary benefit of partitioning a table in a data warehouse?
View solution
Q. In vertical partitioning of a table, how are partitions separated?
View solution
Q. What is a benefit of horizontal partitioning in a data warehouse?
View solution
Q. How does data clustering improve query performance in a data warehouse?
View solution
Q. What is a potential advantage of taking an entire partition off-line for maintenance?
View solution
Q. How does parallel processing contribute to performance improvement in a data warehouse?
View solution
Q. What is a consideration when applying parallel processing techniques in conjunction with data partitioning?
View solution
Q. Why is it important to carefully choose summary and detail levels in a data warehouse?
View solution
Q. What is a rolling summary structure in a data warehouse?
View solution
Q. How does turning off referential integrity verification during data loading impact performance?
View solution
Q. Why is it important to carefully set the maximum number of concurrent users in a database system?
View solution
Q. What is the purpose of setting the checkpoint frequency in a database system appropriately?
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!
.png)
