Armstrong's Axioms in DBMS | Inference Rules| Properties of Functional Dependency

Armstrong’s axioms are a set of inference rules used in database management systems (DBMS) to deduce all the functional dependencies within a relational database. These are also Known as Properties of Functional Dependency. Seven inference rules are there three are Primary Rules and four are Secondary Rules. Armstrong’s axioms / inference rules or Properties of Functional Dependency are Reflexivity, Augmentation, and Transitivity, as well as secondary rules like Union, Composition, Decomposition, and Pseudo Transitivity.

0:00 Properties of functional Dependency
0:34 Reflexivity Property
3:13 Augmentation Property
4:16 Transitivity
6:02 Union
6:30 Decomposition,
8:05 Pseudo Transitivity
8:36 Composition

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