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Consider a database with three relations: R ( A , B , D , E ) ; S ( C , A , F ,
Consider a database with three relations: ;; Assume the following schemas and statistics for the relations. AND AND AND Consider the following query: SELECT FROM WHERE A and AND AND AND AND Draw the initial tree for this query, and then show how the query tree optimized the heuristic rules. Give the estimation cardinality each step your plan.
Consider a database with three relations: ;;
Assume the following schemas and statistics for the relations.
AND AND AND
Consider the following query:
SELECT
FROM
WHERE A and AND
AND AND AND
Draw the initial tree for this query, and then show how the query tree optimized
the heuristic rules.
Give the estimation cardinality each step your plan.
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