Date Added: Feb 2012
Functional dependency is an important feature for referencing to the relationship between attributes and candidate key in tuples. It also shows the relationship between entities in a data world. For data cleaning one typically needs a simple extension of traditional FDs that suffices to capture data inconsistencies commonly found in practice without incurring unnecessary complexity. So the authors propose a class of integrity constraints for relational databases referred to as conditional functional dependencies and their application in data cleaning.