QUESTION $10$

CAR $($CAR$\_$VIN, MOD$\_$CODE, CAR$\_$YEAR, CAR$\_$COLOR$)$

The identifier in the above is mostly likely:

a$.$ CAR$\_$COLOR

b$.$ CAR

c$.$ MOD$\_$CODE

d$.$ CAR$\_$VIN

QUESTION $11$

Which of the following statements is incorrect:

a$.$ In the Crow's Foot notation, the entity name, a noun, is usually written in all capital letters.

b$.$ An optional attribute is an attribute that does not require a value; therefore, it can be left empty.

c$.$ A simple attribute is an attribute that cannot be subdivided. For example, age.

d$.$ In the Chen ERM, multivalued attributes are shown by a double arrow connecting the attribute to the entity.

QUESTION $12$

In this diagram, STUDENT is the

a$.$ entity

b$.$ notation

c$.$ attribute

d$.$ domain

QUESTION $13$

$5$ point question!

This question is from the Chapter Review Problems at the end of Chapter $4$: Number $6.$

Solve the question, then select the correct answer.

All the following are correct, except:

a$.$ ORD$\_$LINE is mandatory to ORDER

b$.$ ORDER entity is optional to DEPARTMENT

c$.$ ORDER and ORD$\_$LINE shows a strong relationship

d$.$ ORDER is mandatory to VENDOR