Entity-Relationship diagram: Entity-Relationship (ER) diagram is the method to represent the relational database using graphical form. This graphical representation shows only primary elements such as records, types, attributes, relationships between entities, and so on. The graphical representation of the ER diagram clearly describes the relationship among entities. In the diagram, every connector is labeled. On one side it is represented by the value 1, and on the other side it is labeled with the value “M”. This labeling is referred to as “cardinality constraint” of the relationship.

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Answer 1

Question

Chapter 6, Problem 5PE

Program Plan Intro

Entity-Relationship diagram:

Entity-Relationship (ER) diagram is the method to represent the relational database using graphical form.

This graphical representation shows only primary elements such as records, types, attributes, relationships between entities, and so on.

The graphical representation of the ER diagram clearly describes the relationship among entities.

In the diagram, every connector is labeled.

On one side it is represented by the value 1, and on the other side it is labeled with the value “M”. This labeling is referred to as “cardinality constraint” of the relationship.

Explanation of Solution

b.

Graph has a cycle:

If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...

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Answer 2

Question

Chapter 6, Problem 5PE

Program Plan Intro

Entity-Relationship diagram:

Entity-Relationship (ER) diagram is the method to represent the relational database using graphical form.

This graphical representation shows only primary elements such as records, types, attributes, relationships between entities, and so on.

The graphical representation of the ER diagram clearly describes the relationship among entities.

In the diagram, every connector is labeled.

On one side it is represented by the value 1, and on the other side it is labeled with the value “M”. This labeling is referred to as “cardinality constraint” of the relationship.

Explanation of Solution

b.

Graph has a cycle:

If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 3

Question

Chapter 6, Problem 5PE

Program Plan Intro

Entity-Relationship diagram:

Entity-Relationship (ER) diagram is the method to represent the relational database using graphical form.

This graphical representation shows only primary elements such as records, types, attributes, relationships between entities, and so on.

The graphical representation of the ER diagram clearly describes the relationship among entities.

In the diagram, every connector is labeled.

On one side it is represented by the value 1, and on the other side it is labeled with the value “M”. This labeling is referred to as “cardinality constraint” of the relationship.

Explanation of Solution

b.

Graph has a cycle:

If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...

Expert Solution & Answer

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Check out a sample textbook solution

See solution

Answer 4

Question

Chapter 6, Problem 5PE

Program Plan Intro

Entity-Relationship diagram:

Entity-Relationship (ER) diagram is the method to represent the relational database using graphical form.

This graphical representation shows only primary elements such as records, types, attributes, relationships between entities, and so on.

The graphical representation of the ER diagram clearly describes the relationship among entities.

In the diagram, every connector is labeled.

On one side it is represented by the value 1, and on the other side it is labeled with the value “M”. This labeling is referred to as “cardinality constraint” of the relationship.

Explanation of Solution

b.

Graph has a cycle:

If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...

Expert Solution & Answer

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Answer 5

Chapter 6, Problem 5PE

Program Plan Intro

Entity-Relationship diagram:

Entity-Relationship (ER) diagram is the method to represent the relational database using graphical form.

This graphical representation shows only primary elements such as records, types, attributes, relationships between entities, and so on.

The graphical representation of the ER diagram clearly describes the relationship among entities.

In the diagram, every connector is labeled.

On one side it is represented by the value 1, and on the other side it is labeled with the value “M”. This labeling is referred to as “cardinality constraint” of the relationship.

Explanation of Solution

b.

Graph has a cycle:

If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...

Answer 6

Chapter 6, Problem 5PE

Program Plan Intro

Entity-Relationship diagram:

Entity-Relationship (ER) diagram is the method to represent the relational database using graphical form.

This graphical representation shows only primary elements such as records, types, attributes, relationships between entities, and so on.

The graphical representation of the ER diagram clearly describes the relationship among entities.

In the diagram, every connector is labeled.

On one side it is represented by the value 1, and on the other side it is labeled with the value “M”. This labeling is referred to as “cardinality constraint” of the relationship.

Answer 7

Chapter 6, Problem 5PE

Program Plan Intro

Entity-Relationship diagram:

Entity-Relationship (ER) diagram is the method to represent the relational database using graphical form.

This graphical representation shows only primary elements such as records, types, attributes, relationships between entities, and so on.

The graphical representation of the ER diagram clearly describes the relationship among entities.

In the diagram, every connector is labeled.

On one side it is represented by the value 1, and on the other side it is labeled with the value “M”. This labeling is referred to as “cardinality constraint” of the relationship.

Answer 8

Explanation of Solution

b.

Graph has a cycle:

If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...

Answer 9

Explanation of Solution

b.

Graph has a cycle:

If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...

Answer 10

Expert Solution & Answer

Answer 11

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Answer 12

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Answer 13

Ch. 6 - Prob. 1PE Ch. 6 - Consider a database that includes the entity sets...Ch. 6 - Design an E-R diagram for keeping track of the...Ch. 6 - Prob. 4PE Ch. 6 - Prob. 5PE Ch. 6 - Prob. 6PE Ch. 6 - Prob. 7PE Ch. 6 - Consider a relation such as sec_course, generated...Ch. 6 - Suppose the advisor relationship set were...Ch. 6 - Prob. 10PE

Explanation of Solution

b. Graph has a cycle: If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...

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Chapter 6 Solutions

b.

Graph has a cycle:

If there is a cycle in the ER diagram means at least two pair of entity sets are related to each other in more than two distinct relations creating a loop...