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functional dependency

F f

Transcription

    • US Pronunciation
    • US IPA
    • US Pronunciation
    • US IPA

Definition of functional dependency words

  • noun Technical meaning of functional dependency (database)   Given a relation R (in a relational database), attribute Y of R is functionally dependent on attribute X of R and X of R functionally determines Y of R (in symbols R.X -> R.Y) if and only if each X in R has associated with it precisely one Y in R (at any one time). Attributes X and Y may be composite. This is very close to a function in the mathematical sense. 1
Just one definition for functional dependency

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Parts of speech for Functional dependency

noun
adjective
verb
adverb
pronoun
preposition
conjunction
determiner
exclamation
Full grammatical hierarchy of Functional dependency

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