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Meaning of covering index | Babel Free

Noun CEFR B2

Definitions

A database table index that contains all the columns needed to fulfill the query.

Equivalents

Français index couvrant

Examples

“Ordinarily, using a covering index will save one disk read (GAIN: 6/8). The gain is automatic but only if the columns in the select list exactly match the columns in the covering index.”

CEFR level

B2

Upper Intermediate
This word is part of the CEFR B2 vocabulary — upper intermediate level.

See also

covering letter covering number covering sickness covering space Coverings coverlessness