. Consider the following query Q with tables T and S where Size of T: 2000 pages I'O for a full table scan, 200 tuples per page Size of S: 1000 pages I/O for a full table scan, 100 tuples per page O: Select From I. S Where T.Sid = S.Sid: B+ Index is built on Sid of T where B+ tree level p is 3 to find a matching for the join condition: T.Sid (as FK) = S.Sid (as PK). Assume that Sid of T is uniformly distributed, average 4 matching Sid of I per Sid of S (i.e., Ave 4 unclustered matching for duplicates) What is the cost of Join with the table Tas inner and the table S as outer table to process the query O ahove
. Consider the following query Q with tables T and S where Size of T: 2000 pages I'O for a full table scan, 200 tuples per page Size of S: 1000 pages I/O for a full table scan, 100 tuples per page O: Select From I. S Where T.Sid = S.Sid: B+ Index is built on Sid of T where B+ tree level p is 3 to find a matching for the join condition: T.Sid (as FK) = S.Sid (as PK). Assume that Sid of T is uniformly distributed, average 4 matching Sid of I per Sid of S (i.e., Ave 4 unclustered matching for duplicates) What is the cost of Join with the table Tas inner and the table S as outer table to process the query O ahove
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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2. Consider the following query Q with tables T and S where
Size of T: 2000 pages I'O for a full table scan, 200 tuples per page
Size of S: 1000 pages I/O for a full table scan, 100 tuples per page
O: Select
From I. S
Where T.Sid = S.Sid:
B+ Index is built on Sid of T where B+ tree level p is 3 to find a matching for the join condition:
T.Sid (as FK) = S.Sid (as PK).
Assume that Sid of T is uniformly distributed, average 4 matching Sid of I per Sid of S (i.e., Ave 4 unclustered
matching for duplicates)
What is the cost of Join with the table Tas inner and the table S as outer table to process the query O ahove
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