functional dependency उदाहरण वाक्य
उदाहरण वाक्य
- His professional contributions spanned subjects as diverse as Functional dependency, object histories, spreadsheet histories, Datalog, and data restructuring.
- The determination of functional dependencies is an important part of designing databases in the relational model, and in database normalization and denormalization.
- In contrast to the functional dependency, the "'multivalued dependency "'requires that certain tuples be present in a relation.
- The notion of logical implication for functional dependencies admits a complete finite axiomatization, known as "'Armstrong's axioms " '.
- This functional dependency may suggest that the attribute EngineCapacity be placed in a relation with candidate key VIN . However, that may not always be appropriate.
- We denote by F ^ { * } _ { A } the set of all functional dependencies that are derivable from F by inference rules in A.
- In other words, its candidate keys do not guarantee that the functional dependency { Person, Shop Type } ?! { Shop } will be respected.
- In its simplest application the chase is used for testing whether the relation and " F " is a set of functional dependencies ( FD ).
- Unlike in the case of functional dependencies, there is no complete axiomatization for join dependencies, though axiomatization exist for more expressive dependency languages such as full typed dependencies.
- A superkey is a property of a relation variable which must hold for all possible values and can only be determined from the functional dependencies which apply to that relation variable.