A table is in 1NF when all key attributes are defined and when all remaining attributes are dependent on the primary key. However, a table in 1NF can still contain both partial and transitive dependencies. (A partial dependency is one in which an attribute is functionally dependent on only a part of a multiattribute primary key. A transitive dependency is one in which one attribute is functionally dependent on another nonker attribute.) A table with a single-attribute primary key cannot exhibit partial dependencies.