adplus-dvertising
frame-decoration

Question

In data warehouse tables, what aspect could cause concern regarding block size and record size?

a.

Data warehouse tables have small records

b.

Data warehouse tables are always normalized

c.

Data warehouse tables have denormalized records that tend to be large

d.

Data warehouse tables are not impacted by block or record size

Answer: (c).Data warehouse tables have denormalized records that tend to be large Explanation:In data warehouse tables, the concern regarding block size and record size arises because data warehouse tables have denormalized records that tend to be large.

Engage with the Community - Add Your Comment

Confused About the Answer? Ask for Details Here.

Know the Explanation? Add it Here.

Q. In data warehouse tables, what aspect could cause concern regarding block size and record size?

Similar Questions

Discover Related MCQs

Q. What is the impact of larger block sizes on the space utilization by block headers?

Q. What is the purpose of the "Block Percent Free" parameter in a DBMS?

Q. In the context of data warehouses, why is setting the "Block Percent Free" parameter to a high value not recommended?

Q. What does the "Block Percent Used" parameter in a DBMS determine?

Q. Why is migration less of a concern in data warehouses compared to other systems?

Q. How can block underutilization be managed in terms of the "Block Percent Free" and "Block Percent Used" parameters?

Q. What does RAID stand for in the context of data storage?

Q. What is the purpose of disk mirroring in RAID?

Q. How does RAID 5 provide fault tolerance?

Q. In RAID technology, what does disk striping involve?

Q. What is the advantage of RAID technology?

Q. In a query-centric system like a data warehouse, what dominates the need to process queries faster?

Q. What is one of the most effective methods for improving performance in a data warehouse?

Q. Why can you create a number of indexes for each table in a data warehouse?

Q. What should be considered when determining the maximum number of indexes per table in a data warehouse?

Q. Why does the loading of data into a data warehouse slow down when there are a large number of indexes?

Q. What is the default indexing method in most database management systems?

Q. Why is the B-Tree index technique considered superior to other indexing techniques?

Q. What is the selectivity of a column in a table?

Q. In a B-Tree index, what type of column is most suitable?