Conditional Functional Dependencies in Data Cleaning

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.