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The document consists of a series of true/false questions and multiple-choice questions related to Matrix Diagrams and Entity-Relationship Diagrams (ERDs). It covers topics such as the purpose of Matrix Diagrams, cardinality, relationship properties, and how relationships are represented in ERDs. The correct answers are indicated throughout the document.

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Kõuśhîk Ràgólu
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203 views4 pages

Section

The document consists of a series of true/false questions and multiple-choice questions related to Matrix Diagrams and Entity-Relationship Diagrams (ERDs). It covers topics such as the purpose of Matrix Diagrams, cardinality, relationship properties, and how relationships are represented in ERDs. The correct answers are indicated throughout the document.

Uploaded by

Kõuśhîk Ràgólu
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
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1.

 Matrix
Diagrams  Mark for
show Review 
Optionalit (1) Points
y and
Cardinality
of the
ERDs they
document.
True or
False?

True

False (*)

Correct

2.  Matrix Diagrams are developed BEFORE the ERD. True or False?
 Mark for Review 
(1) Points

True (*)

False

Correct

3.  Matrix Diagrams are used to verify that all relationships have been identified
for an ERD. True or False?  Mark for Review 
(1) Points

True (*)

False

Correct

4.  Entity boxes are drawn as


 Mark for Review 
(1) Points

Hard Boxes

Soft Boxes (*)

Bold Circles

Normal Circles

Correct

5.  Entity names are always singular. True or False?


 Mark for Review 
(1) Points

True (*)

False
Correct

6. Which of
the  Mark for Review 
following (1) Points
are true
about
Cardinality?
(Choose
two)

(Choose all correct answers)

Cardinality specifies a counting number (like 1, 2, 3, 4 etc.) in a


relationship.
Cardinality tells "how many". (*)

Cardinality specifies only singularity or plurality, but not a specific


plural number. (*)
Cardinality specifies whether something is required or not.

Correct

7.  Relationship Cardinality is important. True or False?


 Mark for Review 
(1) Points

True (*)

False

Correct

8.  One Relationship can be mandatory in one direction and optional in the
other direction. True or False?  Mark for Review 
(1) Points

True (*)

False

Correct

9.  Relationships always exist between


 Mark for Review 
(1) Points

3 or more attributes

2 entities (or one entity and itself) (*)

3 or more entities

2 attributes

Correct
10.  Which of the following are used to show Cardinality on an ERD? (Choose
two)  Mark for Review 
(1) Points

(Choose all correct answers)

Single toe. (*)

Solid line.

Crow's foot. (*)

Dashed line.

11. What are
the three  Mark for
properties Review 
that every (1) Points
relationship
should
have?

Transferability, degree, name

Name, optionality, cardinality (*)

A UID bar, a diamond, an arc

Name, optionality, arcs

Correct

12.  Which of the following are used to show a relationship on an ERD?


(Choose Three)  Mark for Review 
(1) Points

(Choose all correct answers)

Solid line. (*)

Crow's foot. (*)

Dashed line. (*)

# symbol.

Correct

13.  Relationship names are not shown on an ERD. True or False?


 Mark for Review 
(1) Points

True

False (*)

Correct

14.  When reading a relationship between 2 entities, the relationship is read


both from left to right and right to left. True or False?  Mark for Review 
(1) Points
True (*)

False

Correct

15.  When reading the relationships in an ERD, you are said to be speaking:
 Mark for Review 
(1) Points

Relationship-ish

Entity-ish

Gibberish

ERDish (*)

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