Section
5 Quiz
(Answer all questions in this
section)
1. Relationships can be Redundant. True or
False? Mark for Review
(1)
Points
True (*)
False
2. If two entities have two relationships
between them, these relationships can be either _____________ or _____________
. Mark for Review
(1)
Points
Redundant and Replicated
Resourced and Really Good
Redundant or Required (*)
Replicated or Required
3. What uncommon relationship is described
by the statements: "Each DNA SAMPLE may be taken from one and only one
PERSON and each PERSON may provide one and only one DNA SAMPLE" Mark for Review
(1)
Points
One to One Optional (*)
Many to Many Mandatory
One to Many Mandatory
One to Many Optional
4. What relationship is described by the statements:
"Each CUSTOMER may place one or more ORDERs, each ORDER must be placed by
one and only one CUSTOMER"
Mark for Review
(1)
Points
One to Many (*)
Many to Many
Many to More
One to One
5. If the same relationship is represented
twice in an Entity Relationship Model, it is said to be: Mark for Review
(1)
Points
Replicated
Redundant (*)
Removable
Resourceful
6. A non-transferable relationship is
represented by which of the following symbols?
Mark for Review
(1)
Points
Diamond (*)
Heart
Triangle
Circle
7. If a relationship can NOT be moved
between instances of the entities it connects, it is said to be: Mark for Review
(1)
Points
Mandatory
Non-Transferable (*)
Optional
Transferable
8. Every ERD must have at least one non-transferable
relationship. True or False? Mark
for Review
(1)
Points
True
False (*)
9. Non-transferable relationships can only
be mandatory, not optional. True or False?
Mark for Review
(1)
Points
True
False (*)
10. Which
of the following is an example of a non-transferable relationship Mark for Review
(1)
Points
PERSON to BIRTH PLACE (*)
EMPLOYEE to DEPARTMENT
TEACHER to SCHOOL
STUDENT to COURSE
11. When
you resolve a M:M by creating an intersection entity, this new entity will
always inherit: Mark for Review
(1)
Points
The attributes of both related
entities.
The UID's from the entities in the
original M:M.
Nothing is inherited from the
original entities and relationship.
A relationship to each entity from
the original M:M. (*)
12. What
do you call the entity created when you resolve a M:M relationship? Mark for Review
(1)
Points
M:M entity
Intersection entity (*)
Inclusion entity
Recursive entity
13. Intersection
Entities often have the relationships participating in the UID, so the
relationships are often barred. True or False?
Mark for Review
(1)
Points
True (*)
False
14. When
you resolve a M:M, you simply re-draw the relationships between the two
original entities; no new entities are created. True or False? Mark for Review
(1)
Points
True
False (*)
15. A
relationship on an ERD can have attributes. True or False? Mark for Review
(1)
Points
True
False (*)
1. If a relationship can NOT be moved
between instances of the entities it connects, it is said to be: Mark for Review
(1)
Points
Non-Transferable (*)
Optional
Transferable
Mandatory
2. Every ERD must have at least one
non-transferable relationship. True or False?
Mark for Review
(1)
Points
True
False (*)
3. If a relationship can be moved between
instances of the entities it connects, it is said to be: Mark for Review
(1)
Points
Recursive
Committed
Implicit
Transferable (*)
4. Non-transferable relationships can only
be mandatory, not optional. True or False?
Mark for Review
(1)
Points
True
False (*)
5. A non-transferable relationship means
the relationship is manatory at both sides. True or False? Mark for Review
(1)
Points
True
False (*)
6. If two entities have two relationships
between them, these relationships can be either _____________ or _____________
. Mark for Review
(1)
Points
Replicated or Required
Redundant or Required (*)
Redundant and Replicated
Resourced and Really Good
7. If the same relationship is represented
twice in an Entity Relationship Model, it is said to be: Mark for Review
(1)
Points
Removable
Replicated
Resourceful
Redundant (*)
8. Which of the following pairs of entities
is most likely to be modeled as a 1:1 relationship? Mark for Review
(1)
Points
TEACHER and SUBJECT AREA
TREE and BRANCH
PERSON and FINGERPRINT (*)
CAR and WHEEL
9. Which of the following pairs of entities
is most likely to be modeled as a M:M relationship? Mark for Review
(1)
Points
TREE and BRANCH
TEACHER and SUBJECT AREA (*)
CAR and WHEEL
PERSON and FINGERPRINT
10. One
to many relationships are the most uncommon type of relationships in an ERD.
True or False? Mark for Review
(1)
Points
True
False (*)
11. When
you resolve a M:M by creating an intersection entity, this new entity will
always inherit: Mark for Review
(1)
Points
The attributes of both related
entities.
The UID's from the entities in the
original M:M.
Nothing is inherited from the
original entities and relationship.
A relationship to each entity from
the original M:M. (*)
12. A
barred relationship on an ERD signifies that the UID of the intersection entity
is inherited from the entities that made up the original many to many
relationship. True or False? Mark for
Review
(1)
Points
True (*)
False
13. Many
to many relationships between entities usually hide what? Mark for Review
(1)
Points
More attributes
Uniqueness
Another relationship
Another entity (*)
14. If
an intersection entity is formed that contains no attributes of its own, its
uniqueness may be modeled by Mark
for Review
(1)
Points
Creating new attributes.
Barring the relationships to the
original entities. (*)
Placing the UID attributes from the
original entities into the intersection entity.
None of the above.
15. Intersection
Entities often have the relationships participating in the UID, so the
relationships are often barred. True or False?
Mark for Review
(1)
Points
True (*)
False
1. Many to many relationships must be left
in the Model. It is important to have them documented as M-M. True or False? Mark for Review
(1)
Points
True
False (*)
2. What relationship is described by the
statements: "Each CUSTOMER may place one or more ORDERs, each ORDER must
be placed by one and only one CUSTOMER"
Mark for Review
(1)
Points
Many to Many
Many to More
One to One
One to Many (*)
3. If the same relationship is represented
twice in an Entity Relationship Model, it is said to be: Mark for Review
(1)
Points
Redundant (*)
Resourceful
Removable
Replicated
4. One to many relationships are the most
uncommon type of relationships in an ERD. True or False? Mark for Review
(1)
Points
True
False (*)
5. Which of the following pairs of entities
is most likely to be modeled as a M:M relationship? Mark for Review
(1) Points
CAR and WHEEL
TREE and BRANCH
PERSON and FINGERPRINT
TEACHER and SUBJECT AREA (*)
6. A Diamond on a relationship indicates
the Relationship as Non-Tranferable. True or False? Mark for Review
(1)
Points
True (*)
False
7. Every ERD must have at least one
non-transferable relationship. True or False?
Mark for Review
(1)
Points
True
False (*)
8. If a relationship can NOT be moved
between instances of the entities it connects, it is said to be: Mark for Review
(1)
Points
Optional
Mandatory
Non-Transferable (*)
Transferable
9. The relationship between CUSTOMER and
RECEIPT is an example of a non-transferable relationship. True or False? Mark for Review
(1)
Points
True (*)
False
10. If
a relationship can be moved between instances of the entities it connects, it
is said to be: Mark for Review
(1)
Points
Recursive
Implicit
Transferable (*)
Committed
11. If
an intersection entity is formed that contains no attributes of its own, its
uniqueness may be modeled by Mark
for Review
(1)
Points
Creating new attributes.
Barring the relationships to the
original entities. (*)
Placing the UID attributes from the
original entities into the intersection entity.
None of the above.
12. When
you resolve a M:M, you simply re-draw the relationships between the two
original entities; no new entities are created. True or False? Mark for Review
(1)
Points
True
False (*)
13. Many
to many relationships between entities usually hide what? Mark for Review
(1)
Points
More attributes
Another relationship
Uniqueness
Another entity (*)
14. A
barred relationship on an ERD signifies that the UID of the intersection entity
is inherited from the entities that made up the original many to many
relationship. True or False? Mark for
Review
(1)
Points
True (*)
False
15. Intersection
Entities often have the relationships participating in the UID, so the
relationships are often barred. True or False?
Mark for Review
(1)
Points
True (*)
False
1. When you resolve a M:M by creating an
intersection entity, this new entity will always inherit: Mark for Review
(1)
Points
A relationship to each entity from
the original M:M. (*)
The attributes of both related
entities.
The UID's from the entities in the
original M:M.
Nothing is inherited from the
original entities and relationship.
2. What do you call the entity created when
you resolve a M:M relationship? Mark
for Review
(1)
Points
M:M entity
Inclusion entity
Intersection entity (*)
Recursive entity
3. Many to many relationships between
entities usually hide what? Mark
for Review
(1)
Points
Uniqueness
Another relationship
Another entity (*)
More attributes
4. A relationship on an ERD can have
attributes. True or False? Mark for
Review
(1)
Points
True
False (*)
5. If an intersection entity is formed that
contains no attributes of its own, its uniqueness may be modeled by Mark for Review
(1)
Points
Creating new attributes.
Barring the relationships to the
original entities. (*)
Placing the UID attributes from the
original entities into the intersection entity.
None of the above.
6. A Diamond on a relationship indicates
the Relationship as Non-Tranferable. True or False? Mark for Review
(1)
Points
True (*)
False
7. Non-transferable relationships can only
be mandatory, not optional. True or False?
Mark for Review
(1)
Points
True
False (*)
8. The relationship between CUSTOMER and
RECEIPT is an example of a non-transferable relationship. True or False? Mark for Review
(1)
Points
True (*)
False
9. If a relationship can NOT be moved
between instances of the entities it connects, it is said to be: Mark for Review
(1)
Points
Non-Transferable (*)
Optional
Transferable
Mandatory
10. A
non-transferable relationship means the relationship is manatory at both sides.
True or False? Mark for Review
(1)
Points
True
False (*)
11. Which
of the following pairs of entities is most likely to be modeled as a 1:1
relationship? Mark for Review
(1)
Points
PERSON and FINGERPRINT (*)
CAR and WHEEL
TEACHER and SUBJECT AREA
TREE and BRANCH
12. What
uncommon relationship is described by the statements: "Each DNA SAMPLE may
be taken from one and only one PERSON and each PERSON may provide one and only
one DNA SAMPLE" Mark for Review
(1)
Points
One to One Optional (*)
One to Many Mandatory
Many to Many Mandatory
One to Many Optional
13. Which
of the following pairs of entities is most likely to be modeled as a M:M
relationship? Mark for Review
(1)
Points
TREE and BRANCH
PERSON and FINGERPRINT
CAR and WHEEL
TEACHER and SUBJECT AREA (*)
14. What
relationship is described by the statements: "Each CUSTOMER may place one
or more ORDERs, each ORDER must be placed by one and only one CUSTOMER" Mark for Review
(1)
Points
One to Many (*)
One to One
Many to More
Many to Many
15. Many
to many relationships must be left in the Model. It is important to have them
documented as M-M. True or False? Mark
for Review
(1)
Points
True
False (*)
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