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Sagot :
A(n) Transitive dependency exists when there are functional dependencies such that y is functionally dependent on x, z is functionally dependent on y, and x is the primary key
A functional dependencies exists when one property uniquely determines another. If R is a relation with the qualities X and Y, the functional dependency between the attributes is written as X->Y, indicating that Y is functionally dependent on X. In this case, X is a determinant set and Y is a dependent property. There is only one Y value for each value of X.
In a database, functional dependencies acts as a restriction between two groups of characteristics. Aspect normalization and relational database architecture both benefit from the definition of functional dependency. If Y is a subset of X, a functional dependency is straightforward.
To know more about functional dependencies
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