Consider a dense B+tree index with the search key on Salary for 1,000,000 records stored in 1000 disk pages. The data entries use Alternative (2) format and each data entry has a size equal to 25% of the data record size. (1) What is the number of pages required for storing all data entries? (2) If the B+tree is unclustered and if 1% of all records satisfy the condition 100K ≤ Salary ≤ 200K, what is the number of I/O pages required to retrieve the satisfying records using the B+tree. You can assume the height of the B-tree is h. (3) Repeat (2) for a clustered B+tree.
Consider a dense B+tree index with the search key on Salary for 1,000,000 records stored in 1000 disk pages. The data entries use Alternative (2) format and each data entry has a size equal to 25% of the data record size. (1) What is the number of pages required for storing all data entries? (2) If the B+tree is unclustered and if 1% of all records satisfy the condition 100K ≤ Salary ≤ 200K, what is the number of I/O pages required to retrieve the satisfying records using the B+tree. You can assume the height of the B-tree is h. (3) Repeat (2) for a clustered B+tree.
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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Consider a dense B+tree index with the search key on Salary
for 1,000,000 records stored in 1000 disk pages. The data entries use Alternative (2) format and each data entry has a size equal to 25% of the data record size.
(1) What is the number of pages required for storing all data entries?
(2) If the B+tree is unclustered and if 1% of all records satisfy the condition 100K ≤ Salary ≤ 200K, what is the number of I/O pages required to retrieve the satisfying records using the B+tree. You can assume the height of the B-tree is h.
(3) Repeat (2) for a clustered B+tree.
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