'Retrieving matching purchase tuples' presentation slideshows

DBMS Internals Execution and Optimization

DBMS Internals Execution and Optimization. May 10th, 2004. Agenda. Questions on phase 2 of the project Today: DBMS internals part 2 -- Query execution Query optimization Next week: Thursday, not Monday. Mostly Phil Bernstein on meta-data management. Query Execution.

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Hash Tables and Query Execution

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Lecture 13: Query Execution

Lecture 13: Query Execution. Where are we?. File organizations: sorted, hashed, heaps. Indexes: hash index, B+-tree Indexes can be clustered or not. Data can be stored inside the index or not. Hence, when we access a relation, we can either scan or go through an index:

277 views • 27 slides

Query Execution

Query Execution. Where are we?. File organizations: sorted, hashed, heaps. Indexes: hash index, B+-tree Indexes can be clustered or not. Data can be stored in the index or not. Hence, when we access a relation, we can either scan or go through an index: Called an access path.

266 views • 26 slides

Query Execution

392 views • 22 slides

Query Execution

230 views • 22 slides