Q13,Paper 2,D13. An ER Model includes

I. An ER diagram portraying entity types.

II. Attributes for each entity type

III. Relationships among entity types.

IV. Semantic integrity constraints that reflects the business rules

about data not captured in the ER diagram.

(A) I, II, III &IV 

(B) I & IV

(C) I, II & IV 

(D) I & III

Answer A.