Entity Relationship Model Questions

I’m working on a humanities discussion question and need guidance to help me learn.

Question 1

The total quiz points for a student for an entire semester is a(n) ________ attribute.

Select one:

a.

derived

b.

mixed

c.

stored

d.

addressed

Question 2

Data modeling may be the most important part of the systems development process because:

Select one:

a.

data characteristics are important in the design of programs and other systems components.

b.

the data in a system are generally less complex than processes and play a central role in development.

c.

data are less stable than processes.

d.

it is the easiest.

Question 3

The logical representation of an organization’s data is called a(n):

Select one:

a.

database model.

b.

entity-relationship model.

c.

relationship systems design.

d.

database entity diagram.

Question 4

A business rule should be internally consistent.

Select one:

True

False

Question 5

The number of entity types that participate in a Unary relationship is:

Select one:

a.

zero.

b.

one.

c.

two.

d.

three.

Question 6

Which of the following criteria should be considered when selecting an identifier?

Select one:

a.

Choose an identifier that is not stable.

b.

Choose a null identifier.

c.

Choose an identifier that doesn’t have large composite attributes.

d.

Choose the most complex identifier possible.