Phụ thuộc dữ liệu trong cơ sở dữ liệu quan hệ với thông tin ngôn ngữ

On this new viewpoint, in the present paper a notion of “fuzzy” functional dependencies in these databases will be defined reasonably. These new dependencies will be examined in the context of traditional functional dependencies, which play as syntaxtical constraints of the databases under consideration. Relationship between these two kinds of such dependencies will also be considered.