Multiple Choice
An entity cluster is:
A) a formal method for specifying attributes of related entities.
B) a set of one or more entity types and associated relationships grouped into a single abstract entity type.
C) a useful way to present data for a small and fairly simple organization.
D) a way of developing more granular views of the data model.
Correct Answer:

Verified
Correct Answer:
Verified
Q9: Explain the terms subtype and supertype. Discuss
Q10: In the figure shown below, a rental
Q11: The _ rule states that an entity
Q12: A member of a subtype does NOT
Q13: The following figure shows a: <img src="https://d2lvgg3v3hfg70.cloudfront.net/TB7381/.jpg"
Q15: In packaged data models, strong entities always
Q16: The process of defining a more general
Q17: Describe how subtype discriminators are used when
Q18: Discuss the reasoning behind using supertype/subtype relationships.
Q19: The subtype discriminator is a composite attribute