1 In the EntityRelationship Model relationships can have att

1. In the Entity-Relationship Model, relationships can have attributes. T/F

2. Attributes are the smallest division of data in ER diagram. T/F

3.Which level of abstraction is the ER model most concerned with? A. External, B. Conceptual, c. Physical, D. Internal

4. Consider the following relationship involving two entities, students and classes:A student can take many classes. A class can be taken by many students.

How many tables can be used to represent this relationship in a schema? A. 1 B. 2 C. 3. D all of them

Solution

1. True Because, to determine the relationship the attributes are used.

2. True Attributes are the smallest division of data in ER diagram because an attribute is a characteristic property of an entity. An entity can have several attributes.

3. A. External

4. B. 2