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Use the following schema and query plan to answer the corresponding questions S(d,e,f,g) B(S) = 1000 T(S) = 10,000 T(T) = 10,000 V(S,e) = 10 R(a,b,c) T(h,ij) B(R) : = 1000 B(T) = 1000 %3D T(R) = 10,000 Min(R,a) = 0 Max(R,a) = 9000 V(S,f) = 100 V(R,b) = 100 V(R,c) = 20 %3| V(T,h) : = 100 %3D V(S,d) = 50 V(S,g) = 40 %3D (f) *a,b.c.g.lj R5 (e) g=h R4 (d) o b=100 v b=101 R3 T(B+ tree index on h) (c)| R2 R1 (a) o a> 100 a a c= 1000 (b) o . - 10 af = 1000 R (B+ tree index on a) (B+ tree index on (e,f) ) a. Compute the cardinality of all intermediate relations labeled R1 through R5 and the final result

Use the following schema and query plan to answer the corresponding questions S(d,e,f,g) B(S) = 1000 T(S) = 10,000 T(T) = 10,000 V(S,e) = 10 R(a,b,c) T(h,ij) B(R) : = 1000 B(T) = 1000 %3D T(R) = 10,000 Min(R,a) = 0 Max(R,a) = 9000 V(S,f) = 100 V(R,b) = 100 V(R,c) = 20 %3| V(T,h) : = 100 %3D V(S,d) = 50 V(S,g) = 40 %3D (f) *a,b.c.g.lj R5 (e) g=h R4 (d) o b=100 v b=101 R3 T(B+ tree index on h) (c)| R2 R1 (a) o a> 100 a a c= 1000 (b) o . - 10 af = 1000 R (B+ tree index on a) (B+ tree index on (e,f) ) a. Compute the cardinality of all intermediate relations labeled R1 through R5 and the final result

Database Systems: Design, Implementation, & Management
Database Systems: Design, Implementation, & Management
12th Edition
ISBN:9781305627482
Author:Carlos Coronel, Steven Morris
Publisher:Carlos Coronel, Steven Morris
Chapter11: Database Performance Tuning And Query Optimization
Section: Chapter Questions
Problem 13RQ
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Use the following schema and query plan to answer the corresponding questions R(a,b,c) B(R) = 1000 T(R) = 10,000 Min(R,a) Max(R,a) = 9000 V(S,f) = 100 V(R,b) = 100 V(R,c) = 20 S(d,e,f,g) B(S) T(S) = 10,000 T(T) = 10,000 V(S,e) = 10 T(h,ij) = 1000 B(T) : = 1000 %3D %3D V(T,h) = 100 = 0 %3D %3D %3D V(S,d) = 50 V(S,g) = = 40 (f) A a,b.c.g.lj R5 (e) g=h R4 (d) o b=100 v b=101 R3 T( B+ tree index on h) (c) R2 R1 (a) ở a> 100 a a <= 1000 (b) oe = 10 af= 1000 (B+ tree index on a) (B+ tree index on (e,f) ) a. Compute the cardinality of all intermediate relations labeled R1 through R5 and the final result
Transcribed Image Text:Use the following schema and query plan to answer the corresponding questions R(a,b,c) B(R) = 1000 T(R) = 10,000 Min(R,a) Max(R,a) = 9000 V(S,f) = 100 V(R,b) = 100 V(R,c) = 20 S(d,e,f,g) B(S) T(S) = 10,000 T(T) = 10,000 V(S,e) = 10 T(h,ij) = 1000 B(T) : = 1000 %3D %3D V(T,h) = 100 = 0 %3D %3D %3D V(S,d) = 50 V(S,g) = = 40 (f) A a,b.c.g.lj R5 (e) g=h R4 (d) o b=100 v b=101 R3 T( B+ tree index on h) (c) R2 R1 (a) ở a> 100 a a <= 1000 (b) oe = 10 af= 1000 (B+ tree index on a) (B+ tree index on (e,f) ) a. Compute the cardinality of all intermediate relations labeled R1 through R5 and the final result
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