Optimizing SQL Query Processing (via Ilyas Ahmad’s blog)

Optimizing SQL Query Processing Introduction SQL query processing requires that the DBMS identify and execute a strategy for retrieving the results of the query.  The SQL query determines what data is to be found, but does not define the method by which the data manager searches the database. Hence, query optimization is necessary for high-level relational queries and provides an opportunity for the DBMS to systematically evaluate alternative query execution strategies and to c … Read More

via Ilyas Ahmad's blog

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