6. A rectangle represents which of the following in an ERD?

A. Attribute
B. Entity
C. Optional One
D. Relationship

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7. An entity name should be which of the following?

A. A singular noun
B. Specific to the organization
C. Concise
D. All of the above.

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8. An oval represents which of the following in an ERD?

A. Attribute
B. Entity
C. Optional One
D. Relationship

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9. When the minimum and maximum number of instances of an entity is one, you know which of the following?

A. Mandatory one
B. Optional one
C. Mandatory many
D. Cannot tell

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10. An attribute name should be which of the following?

A. Singular verb or verb phrase
B. Follow a standard format
C. Use a alias
D. All of the above.

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