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What do you mean by an execution plan? Why is it used? How will you view it?
a.) An execution plan can be known as a road map which textually or graphically illustrates the data retrieval methods that have been chosen by the SQL
Server query optimizer, for a stored procedure or ad- hoc query.
b.) It is used as it's a very useful tool for a developer to understand performance characteristics of a query or stored procedure.
c.) There exists an option known as "Show Execution Plan" in Query Analyzer. If this option is turned on, it would display query execution plan in separate window when query is run again.
Define query optimization. Query optimization refers to the process of search the lowest -cost method of evaluating a given query.
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The clause in SQL which specifies that the query result should be sorted in ascending or descending order based upon the values of one or much more columns is Ans : Order by
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Objectives After reading this part, you should be able to: Modify, create, and delete database schema objects; Update database using SQL command; Retrieve data f
define anomalies and different types of anomalies with example
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#question. Draw a picture of a moving source and the waves surrounding it according to what you observed in this experiment. How does the spacing of the wave-fronts in front of the
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