390 Part III . Administration . Indexes can (Web hosting ecommerce)
390 Part III . Administration . Indexes can help speed up operations with databases. . The EXPLAIN statement is used to look at the indexes that a SELECTstatement can use or might benefit from. . You can create indexes during the table creation statement or through the use of a separate CREATE INDEX statement. . The OPTIMIZE TABLEstatement is used to repair and defragment MyISAMand BDB tables. . MySQL performs many optimizations in the background without any user intervention. Statements are analyzed before they are run to determine validity and how to phrase them better for improved performance. …
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