Explain how Oracle 9i offers a comprehensive high performance infrastructure for e-business. What infrastructure here means?
Latest Answer : It seems that, if the main query selects from a great number of rows, than Oracle will have a better execution plan if you use EXISTS. If the main query selects from a small number of rows, while the subquery is heighly selective, then you the ...
Which one gives better performance,
co-related subquery or inline views? Why?
Latest Answer : Inline views works better than correlated subqueries in 8i. But things have changed in 9i. This is because Oracle has changed their logic while processing a correlated subquery. ...
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