Week 4 Flashcards
the grouping of identifiable information about an entity, that is part of a sub-grouping is called what?
Subclass (subtype)
The main entity of a subclass is called what?
Superclass (supertype)
The _____ is a process of identifying a set of subclasses of an entity type.
specialization
If two entities can be combined into a superclass and made a subclass of it, they are considered what?
generalized
When an entity may be a member of more than one subclass of a specializaation it is considered what?
overlapping
A ______ specialization is where every entity in the superclass must be a member of at least 1 subclass
total
A ______ specialization is where an entity does not have to belong to a subclass.
partial
When a subclass can be a subclass in more than 1 class/subclass relationship it creates a ______.
specialization lattice
A subclass with more than one superclass is called what?
shared subclass