CONTEXT:Consider two relations R(a,b) and S(c,d) that are both horizontallypartitioned across N = 3 nodes as shown in the diagram below. Each node locallystores approximately i of the tuples in R and of the tuples in S. The tuplesof R are randomly organized across machines (i.e., R is block partitioned acrossmachines) while the tuples of S are hash-partitioned on S.c.QUERY:SELECT a, avg(d) as avgFROM R, SWHERE R.b = S.cS.c%3DAND S.d > 0GROUP BY aPLEASE SOLVE THE FOLLOWING:Assume the same query as before, only now the data is distributed on300 servers instead of just 3 servers. We expect a linear speedup, in other wordswe expect the runtime to be about 100 times faster. However, if the values of someattribute are skewed, then the performance of a parallel query plan can be far froma linear speedup. Indicate with of the attributes below, if skewed, can significantlyprevent your query plan from achieving linear speedup.• Skew on attribute R.a.• Skew on attribute R.b.• Skew on attribute S.c.• Skew on attribute S.d.

The Database is the collection of data and information. The query language is used to manipulate the…

Consider two relations R(a,b) and S(c,d) that are both horizontally partitioned across N = 3 nodes as shown in the diagram below. Each node locally stores approximately of the tuples in R and of the tuples in S. The tuples of R are randomly organized across machines (i.e., R is block partitioned across machines) while the tuples of S are hash-partitioned on S.c.

Consider two relations R(a,b) and S(c,d) that are both horizontally partitioned across N = 3 nodes as shown in the diagram below. Each node locally stores approximately of the tuples in R and of the tuples in S. The tuples of R are randomly organized across machines (i.e., R is block partitioned across machines) while the tuples of S are hash-partitioned on S.c.

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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