Given the basic ER and relational model which of the following is incorrect?
A. An entity can have more than one attribute
B. An attribute of an entity can be composite.
C. In a row of a relational table, an attribute has more than one value.
D. In a row of a relational table, an attribute can have exactly one value or a NULL value.
Answer:C
Given the basic ER and relational model which of the following is incorrect?
A. An entity can have more than one attribute B. An attribute of an entity can be composite. C. In a row of a relational table, an attribute has more than one value. D. In a row of a relational table, an attribute can have exactly one value or a NULL value.