Question 1 of 25
Hints left: 3
Q1
In which of the following is a single-entity instance of one type related to many entity instances of another type?
Q2
Which type of entity represents an actual occurrence of an associated generalized entity?
Q3
A relation has cells that hold multi-value entries.
Q4
In which of the following can many entity instances of one type be related to many entity instances of another type?
Q5
Entities of a given type are grouped into a(n):
Q6
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?
Q7
A primary key is a composite key that was selected to be the main identifier for the relation.
Q8
A primary key is a composite key that was selected to be the main identifier for the relation.
Q9
Which type of entity is related to two or more associated entities that each contain specialized attributes that apply to some but not all of the instances of the entity?
Q10
A primary key is a composite key that was selected to be the main identifier for the relation.
Q11
In a relation, the rows are sometimes called "fields".
Q12
In which of the following is a single-entity instance of one type of related to a single-entity instance of another type?
Q13
Which of the following is NOT a basic element of all versions of the E-R model?
Q14
Which of the following indicates the maximum number of entities that can be involved in a relationship?
Q15
A functional dependency is always an equation.
Q16
A primary key is a composite key that was selected to be the main identifier for the relation.
Q17
An attribute that names or identifies entity instances is a(n):
Q18
Properties that describe the characteristics of entities are called:
Q19
Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?
Q20
A recursive relationship is a relationship between an entity and ________ .
Q21
Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?
Q22
Entities can be associated with one another in which of the following?
Q23
Which of the following indicates the minimum number of entities that must be involved in a relationship?
Q24
Which of the following refers to something that can be identified in the user's work environment, something that the users want to track?
Q25
In a one-to-many relationship, the entity that is on the one side of the relationship is called a(n) ________ entity.