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.
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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