Functional Dependency in DBMS

Hello Guys,
So when we learn about keys in database or normalization or various normal forms, we come across the term functional dependency. What exactly is functional dependency? So the definition of functional dependency states that, A functional dependency is a constraint that specifies the relationship of one attribute to another attribute in a relation or a table.
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#FunctionalDependency #Keys #DBMS

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[@makingITsimple1]

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[@makingITsimple1]

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[@levyax1964]

And we can conclude if x -> y is a valid function, then it's a valid functional dependency, as one x can't point to 2 ys

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