1. In the Entity-Relationship Model, relationships can have attributes. T/F 2. A

Q: 1. In the Entity-Relationship Model, relationships can have attributes. T/F 2. A

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

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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

Explanation / Answer

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

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1. In the Entity-Relationship Model, relationships can have attributes. T/F 2. A

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