Q. Why is it important to have consistent object names in both logical and physical models?

View solution

Q. What is the primary purpose of adopting effective standards for naming data structures in the staging area of a data warehouse?

View solution

Q. What should be indicated in the name of a file in the staging area to provide clarity about its purpose?

View solution

Q. In the staging area, what does expressing the purpose in the file name help with?

View solution

Q. What types of files should have naming conventions as part of the standards in the data warehouse environment?

View solution

Q. What is the fundamental unit of input/output transfer from the database to memory in a file?

View solution

Q. Why does increasing the block size in a file have the advantage of decreasing the number of reads?

View solution

Q. What is the downside of larger block sizes in terms of memory management?

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

Q. How does RAID 5 provide fault tolerance?

View solution

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

View solution

Q. What is the advantage of RAID technology?

View solution