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A database is a structured collection of data that is saved in a computer system and organised so that it can be found quickly. Information may be quickly found via databases.

In MySQL, the statement to build an index is as follows: [UNIQUE|FULLTEXT|SPATIAL] CREATE index name INDEX APPLICATION OF [BTREE | HASH | RTREE] (column name [(length)] ON table name [ASC | DESC] UNIQUE specifies that MySQL will create a constraint requiring that all values in the index be distinct.

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