Phụ thuộc hàm xấp xỉ và phân tử ngoại lai đối với phụ thuộc hàm

The aim of this paper is to present the concepts about Type 2 Approximate Functional Dependency - AFD 2 (relating to the correlation between atributes of the relational file) and the outliers with functional dependency. The paper also gives some properties of ADF 2 and algorithms for finding the outliers with functional dependency.