1-Which of the following is not a basic element of the E-R Model?

Select one:

a. Attributes

b. All options are correct

c. Entities

d. Relationships

2- Whether an instance of one entity must participate in a relationship with another entity is called the ______________.

Select one:

a. minimum cardinality

b. ordinality

c. degree

d. Participation

3- ERD is unable to represent weak entities.

Select one:

True

False

4- One type of strong entity is the EmployeeID-dependent entity.

Select one:

True

False

5- It is possible for an entity to have a relationship to itself.

Select one:

True

False

6- The E-R Model assumes that all instances of a given entity have the same attributes.

Select one:

True

False

7- The number of entities involved in a relationship is the cardinality of the relationship.

Select one:

True

False

8- There is usually only one instance in an entity created in an ERD model

Select one:

True

False