Documents (Slides by Hector Garcia-Molina, hector/cs245/notes.htm)

(Slides by Hector Garcia-Molina, http://www-db.stanford.edu/~hector/cs245/notes.htm) Chapters 15 and 16b: Query Optimization --> Generating and comparing plans Query Generate…

Documents ATF_80-4_2007-2005 (1)

(0) 91 23 95 50 (0) 17 18 11 43 24 (0) 91 23 18 51 55 (0) 91 23 18 52 19 (0) 91 23 30 85 Service + Spare parts e-mail: [email protected] e-mail: [email protected]…

Documents Query Processing

Query Processing Exercise Compute depositor customer, with depositor as the outer relation. Customer has a secondary B+-tree index on customer-name Blocking factor 20 keys…

Documents CS 245: Database System Principles Notes 7: Query Optimization

CS 245: Database System Principles Notes 7: Query Optimization Hector Garcia-Molina Notes 7 --> Generating and comparing plans Query Generate Plans Pruning x x Estimate…