HomeServicesBlogDictionariesContactSpanish Course
Home › Dictionary › English › covering index
← Back to search

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 all B2 English words →

See also

covering letter covering number covering sickness covering space Coverings coverlessness

Learn this word in context

See covering index used in real conversations inside our free language course.

Start Free Course

Know this word better than we do? Language is a living thing — help us keep it growing. Collaborate with Babel Free