An organization looking to employ big data to power big decisions likely has access to highly useful information right in its own databases, and SQL is the standard language for working with data stored in relational databases. Like any programming language, SQL comes with nuances and best practices learned with experience. This assessment invites you to examine approaches for working with SQL$.$

Write a $3\mathrm{.}5-$ to $4-$page paper that discusses the following concepts in query processing for data integration systems.

Explain the cost associated with the use of ORDER BY and GROUP BY clauses in SQL coding. Support your explanation with examples.

Discuss why these clauses should be determined necessary if they are to be used. What impacts on performance are associated with the use of ORDER BY and GROUP BY clauses? Support your explanation with examples.

Discuss the mechanisms of adaptive query processing. How does the query processor adapt according to changing conditions during execution? Support your explanation with examples.