In relational database theory, a functional dependency is the following constraint between two attribute sets in a relation: Given a relation R and attribute...
20 KB (2,583 words) - 16:32, 28 August 2024
Unified Modeling Language Dependency relation, a type of binary relation in mathematics and computer science. Functional dependency, a relationship between...
4 KB (553 words) - 11:14, 29 March 2024
Functional dependency Functional dependency is the property that a value in a tuple may be derived from another value in that tuple. A functional dependency...
30 KB (4,208 words) - 19:11, 26 August 2024
attributes (e.g. database columns) are functionally dependent on solely a key, except the case of functional dependency whose right hand side is a prime attribute...
14 KB (1,791 words) - 11:52, 18 August 2024
multivalued dependency is a full constraint between two sets of attributes in a relation. In contrast to the functional dependency, the multivalued dependency requires...
8 KB (1,293 words) - 19:31, 18 August 2024
software depends on directly. In a computer program a direct dependency is functionality from a library, or API, or any software component that is referenced...
4 KB (476 words) - 19:56, 18 July 2024
Dependency injection involves four roles: services, clients, interfaces and injectors. A service is any class which contains useful functionality. In...
34 KB (3,452 words) - 20:13, 29 August 2024
Fourth normal form (section Multivalued dependencies)
are concerned with functional dependencies, 4NF is concerned with a more general type of dependency known as a multivalued dependency. A table is in 4NF...
8 KB (885 words) - 10:12, 6 July 2024
recognized dependency types are: Functional dependency Join dependency Multivalued dependency Tuple-generating dependency Equality-generating dependency Embedded...
1 KB (97 words) - 18:52, 24 April 2024
its dependency on Format can be preserved: Now, both the Book and Price tables conform to 2NF. The Book table still has a transitive functional dependency...
36 KB (2,852 words) - 20:00, 17 July 2024