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

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

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

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

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

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

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

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

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

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

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

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

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Q. How does RAID 5 provide fault tolerance?

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

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Q. What is the advantage of RAID technology?

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

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

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

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

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

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