Which of the following is a generic entity type that has a relationship with one or more subtypes?
The property by which subtype entities possess the values of all attributes of a supertype is called:
The process of defining one or more subtypes of a supertype and forming a relationships is called:
The process of defining a more general entity type from a set of more specialized entity type is called:
A _____ constraint is a type of constraint that addresses whether an instance of a supertype must also be an instance of at least one subtype
a set of one or more entity types and associated relationships grouped into a single abstract entity type.
An entity cluster can be formed by:
Using a packaged data model, projects take less time and cost because
essential components and structures are already defined
A generic or template data model that can be reused as a starting point for a data modeling project is called a(n):
All of the following are advantages of packaged data models except:
more one-to-one relationships give the data model more flexibility
When identifying with the hparts of the packaged data model that apply to your organization, you should first start with:
The most important challenge of customizing a purchased data model is:
determining the business rules that will be established through the data model.
In packaged data models, strong entities always have _____ between them.
In packaged data models, all subtype/supertype relationships follow the _____ and _____ rules.
total specialization and overlap
Which of the following is a generic entity type that has a relationship with one or more subtypes quizlet?
Which of the following is a generic entity type that has a relationship with one or more subtypes group of answer choices?
Term Enhanced entity-relationship (EER) model | Definition A model that has resulted from extending the original E-R model with new modeling. |
Term Supertype | Definition A generic entity type that has a relationship with one or more subtypes. |