Which term refers to the concept where a Subclass inherits attributes from multiple Superclasses?
Anonymous Quiz
0%
Categorization
71%
Multiple Inheritance
0%
Specialization
29%
Generalization Hierarchy
The Subclass relationship to the Superclass is also known as a:
Anonymous Quiz
46%
Is-A relationship
23%
Has-A relationship
23%
Part-Of relationship
8%
Belongs-To relationship
A subclass whose entities are determined by a specific condition on a Superclass attribute is called:
Anonymous Quiz
7%
Total Specialization
57%
Attribute-Defined Specialization
21%
User-Defined Specialization
14%
Overlapping Specialization
Which constraint dictates that an entity in the Superclass can belong to at most one of the Subclasses?
Anonymous Quiz
35%
Overlapping Constraint
41%
Disjointness Constraint
12%
Total Constraint
12%
Completeness Constraint
A specialized type of Subclass that models a single relationship involving members of one of several different entity types is a:
Anonymous Quiz
19%
Generalization Hierarchy
69%
Category (Union Type)
6%
Superclass
6%
Specialization Lattice
The combination of constraints (Disjoint, Total) means that an entity must belong to:
Anonymous Quiz
20%
Exactly one subclass
40%
Zero or more subclasses
27%
At least one subclass
13%
All defined subclasses
The Superclass contains common attributes, while the Subclass contains:
Anonymous Quiz
0%
Only the key attribute
36%
Its own specific attributes
29%
All attributes of the superclass
36%
Attributes inherited from its superclass
If an EER model contains shared subclasses, the structure is referred to as a:
Anonymous Quiz
7%
Attribute-Defined Hierarchy
43%
Generalization Hierarchy
43%
Specialization/Generalization Lattice
7%
Simple Specialization
The constraint that specifies an entity in the Superclass may not belong to any of the Subclasses is the:
Anonymous Quiz
21%
Total Constraint
71%
Partial Completeness Constraint
7%
Overlapping Constraint
0%
Disjoint Constraint
Which of the following concepts is considered a top-down process, breaking an entity into more specific types?
Anonymous Quiz
54%
Specialization
23%
Generalization
15%
Categorization
8%
Aggregation
If an entity type can have two or more distinct key attributes, they are called:
Anonymous Quiz
0%
Alternate Keys
62%
Candidate Keys
15%
Foreign Keys
23%
Partial Keys
The category construct is mainly used to represent:
Anonymous Quiz
23%
Multiple inheritance
23%
Disjoint specialization
38%
Union types
15%
Generalization lattices
In EER notation, Total Completeness constraint is represented by:
Anonymous Quiz
8%
A single line connecting Superclass to circle
58%
A double line connecting Superclass to circle
33%
A dashed line connecting Superclass to circle
0%
A zigzag line connecting Superclass to circle
The process of defining subclasses to represent distinctions among entities in the Superclass is:
Anonymous Quiz
42%
Generalization
42%
Specialization
0%
Union Type
17%
Aggregation
Which type of specialization is explicitly decided by the user when entering the data, rather than being determined by an attribute value?
Anonymous Quiz
25%
Attribute-Defined Specialization
33%
Total Specialization
42%
User-Defined Specialization
0%
Overlapping Specialization
The combination of constraints (Overlapping, Partial) means that an entity may belong to:
Anonymous Quiz
17%
Exactly one subclass
25%
All defined subclasses
50%
Zero or more subclasses
8%
At least one subclass
The Superclass/Subclass relationship where entities of the Superclass have only the possibility of being in the Subclass is:
Anonymous Quiz
23%
Total Specialization
8%
Partial Specialization
46%
Attribute-Defined Specialization
23%
Disjoint Specialization
The formal term for a Row in the Relational Model is:
Anonymous Quiz
31%
Domain
56%
Tuple
13%
Relation
0%
Attribute
The number of Attributes in a relation is referred to as its:
Anonymous Quiz
19%
Domain
19%
Cardinality
56%
Degree
6%
State
The integrity constraint that specifies that the Primary Key cannot have a NULL value is the:
Anonymous Quiz
7%
Domain Constraint
21%
Entity Integrity Constraint
43%
Referential Integrity Constraint
29%
Key Constraint