'Current r tuple' presentation slideshows

Evaluation of Relational Operations

Evaluation of Relational Operations. Yanlei Diao UMass Amherst March 01, 2007. Slides Courtesy of R. Ramakrishnan and J. Gehrke. Relational Operations. We will consider how to implement: Selection ( ) Selects a subset of rows from relation.

447 views • 35 slides

Overview of Query Evaluation

521 views • 34 slides

Evaluation of Relational Operations

Evaluation of Relational Operations. Why does a DBMS implements several algorithms for each algebra operation? What are query evaluation plans and how are they represented? Why is it important to find good evaluation plan for a query? How is this done in relational DBMS? .

449 views • 27 slides

Overview of Query Evaluation

338 views • 21 slides