Related Questions

Which type of entity cannot exist in the database unless another type of entity also exists in the database, but does not require that the identifier of that other entity be included as part of its own identifier?
A Weak entity
B Strong entity
C ID-dependent entity
D ID- independent entity
Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?
A Supertype entity
B Subtype entity
C Archetype entity
D Instance entity
Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?
A Weak entity
B Strong entity
C ID-dependent entity
D ID-independent entity
An ID-dependent entity is an entity whose identifier is a composite identifier where no portion of the composite identifier is an identifier of another entity.
A True
B False
A strong entity is an entity whose existence depends on some other entity type.
A True
B False
When transforming an entity-relationship model into a relational database design, each entity is represented as a table.
A True
B False
Which type of entity represents an actual occurrence of an associated generalized entity?
A Supertype entity
B Subtype entity
C Archetype entity
D Instance entity
Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity?
A Supertype entity
B Subtype entity
C Archetype entity
D Instance entity
Which of the following database activities allow for the actual retrieval and use of a database?
A Enterprise modeling
B Logical database design
C Physical database design and definition
D Database implementation
In an enterprise-class database system, business users interact directly with database applications, which directly access the database data.
A True
B False

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