Q. Which type of entity represents an actual occurrence of an associated generalized entity?

View solution

Q. A recursive relationship is a relationship between an entity and ________ .

View solution

Q. Which of the following indicates the minimum number of entities that must be involved in a relationship?

View solution

Q. Which of the following refers to something that can be identified in the users' work environment, something that the users want to track?

View solution

Q. In which of the following is a single-entity instance of one type related to many entity instances of another type?

View solution

Q. Which of the following refers to an entity in which the identifier of one entity includes the identifier of another entity?

View solution

Q. 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?

View solution

Q. An attribute that names or identifies entity instances is a(n):

View solution

Q. Properties that describe the characteristics of entities are called:

View solution

Q. In which of the following can many entity instances of one type be related to many entity instances of another type?

View solution

Q. Entities of a given type are grouped into a(n):

View solution

Q. Which of the following is NOT a E-R model of all versions of the E-R model?

View solution

Q. In which of the following is a single-entity instance of one type of related to a single-entity instance of another type?

View solution

Q. Entities can be associated with one another in which of the following?

View solution

Q. Which type of entity has its relationship to another entity determined by an attribute in that other entity called a discriminator?

View solution

Q. Which type of entity represents a logical generalization whose actual occurrence is represented by a second, associated entity?

View solution

Q. In a one-to-many relationship, the entity that is on the many side of the relationship is called a(n) ________ entity.

View solution

Q. The database schema is written in

View solution

Q. An entity set that does not have sufficient attributes to form a primary key is a

View solution

Q. In an E-R diagram attributes are represented by

View solution