Dependency theory (database theory)
Today, Dependency theory (database theory) is a topic that arouses great interest and debate in society. Since its emergence, Dependency theory (database theory) has captured the attention of experts and the general public, generating discussions and controversies around its importance and impact in different areas. Whether due to its historical relevance, its impact on daily life or its involvement in current issues, Dependency theory (database theory) has become a topic of unavoidable interest for those seeking to understand the complexity of the contemporary world. In this article, we will explore various aspects related to Dependency theory (database theory), analyzing its influence and providing different perspectives that invite reflection and critical analysis.
Dependency theory is a subfield of database theory which studies implication and optimization problems related to logical constraints, commonly called dependencies, on databases. The best known class of such dependencies are functional dependencies, which form the foundation of keys on database relations. Another important class of dependencies are the multivalued dependencies. A key algorithm in dependency theory is the chase, and much of the theory is devoted to its study.
Dependencies
Some recognized dependency types are:
- Functional dependency
- Join dependency
- Multivalued dependency
- Tuple-generating dependency
- Transitive dependency
- Equality-generating dependency
- Embedded dependency
- Inclusion dependency
- Full typed dependency
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