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05 Feb Retrieval of data in SQL can be sped up by the creation of indexes in a table. Explain what an index is and how it works in

Posted at 10:35h in Information Systems by

In 250 words or more, answer the following.

Retrieval of data in SQL can be sped up by the creation of indexes in a table. Explain what an index is and how it works in speeding up data retrieval. Describe one issue that can occur by using too many indexes in a table. 

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