Section 3 Quiz Database Design Oracle

Section 3 Quiz

                (Answer all questions in this section)

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

(1) Points

                Name, optionality, cardinality (*)

                A UID bar, a diamond, an arc

                Name, optionality, arcs

                Transferability, degree, name

2.            Relationships can be either mandatory or optional. True or False?            Mark for Review

(1) Points

                True (*)

                False

3.            In a business that sells pet food, choose the best relationship name between FOOD TYPE and ANIMAL (e.g. dog, horse, or cat). (Choose Two)            Mark for Review

(1) Points

                                                (Choose all correct answers)      

                Each ANIMAL must be the seller of one or more FOOD TYPES.

                Each FOOD TYPE may be manufactured by one or more ANIMALs.

                Each FOOD TYPE must be suitable for one or more ANIMALs. (*)

                Each FOOD TYPE may be given to one or more ANIMALs. (*)

4.            One Relationship can be mandatory in one direction and optional in the other direction. True or False?  Mark for Review

(1) Points

                True (*)

                False

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

(1) Points

                                                (Choose all correct answers)      

                Crow's foot. (*)

                Solid line.

                Single toe. (*)

                Dashed line.

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

(1) Points

                                                (Choose all correct answers)      

                Cardinality tells "how many". (*)

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

                Cardinality specifies whether something is required or not.

                Cardinality specifies only singularity or plurality, but not a specific plural number. (*)

7. Which symbol is used to show that a particular attribute is mandatory?             Mark for Review

(1) Points

                &

                #

                o

                * (*)

8.            Entity boxes are drawn as            Mark for Review

(1) Points

                Soft Boxes (*)

                Hard Boxes

                Normal Circles

                Bold Circles

9.            ERDish describes a relationship in words. True or False? Mark for Review

(1) Points

                True (*)

                False

10.          Which of the following are used to show a relationship on an ERD? (Choose Three)          Mark for Review

(1) Points

                                                (Choose all correct answers)      

                Dashed line. (*)

                Crow's foot. (*)

                Solid line. (*)

                # symbol.

11. 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

12. Relationship names are not shown on an ERD. True or False?               Mark for Review

(1) Points

                True

                False (*)

13. Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?              Mark for Review

(1) Points

                True

                False (*)

14.          Matrix Diagrams are developed BEFORE the ERD. True or False?                Mark for Review

(1) Points

                True (*)

                False

15.          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

1.            Which of the following are used to show a relationship on an ERD? (Choose Three)          Mark for Review

(1) Points

                                                (Choose all correct answers)      

                # symbol.

                Solid line. (*)

                Dashed line. (*)

                Crow's foot. (*)

2.            Relationship names are not shown on an ERD. True or False?      Mark for Review

(1) Points

                True

                False (*)

3.            When reading the relationships in an ERD, you are said to be speaking:  Mark for Review

(1) Points

                Entity-ish

                Gibberish

                ERDish (*)

                Relationship-ish

4.            ERDish describes a relationship in words. True or False? Mark for Review

(1) Points

                True (*)

                False

5.            What are the three properties that every relationship should have?        Mark for Review

(1) Points

                Name, optionality, arcs

                Transferability, degree, name

                Name, optionality, cardinality (*)

                A UID bar, a diamond, an arc

6.            Relationships can be either mandatory or optional. True or False?            Mark for Review

(1) Points

                True (*)

                False

7.            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. (*)

                Dashed line.

                Crow's foot. (*)

                Solid line.

8.            Relationships always exist between        Mark for Review

(1) Points

                3 or more attributes

                3 or more entities

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

                2 attributes

9.            In a business that sells pet food, choose the best relationship name between FOOD TYPE and ANIMAL (e.g. dog, horse, or cat). (Choose Two)            Mark for Review

(1) Points

                                                (Choose all correct answers)      

                Each ANIMAL must be the seller of one or more FOOD TYPES.

                Each FOOD TYPE may be given to one or more ANIMALs. (*)

                Each FOOD TYPE may be manufactured by one or more ANIMALs.

                Each FOOD TYPE must be suitable for one or more ANIMALs. (*)

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

(1) Points

                                                (Choose all correct answers)      

                Cardinality specifies whether something is required or not.

                Cardinality specifies only singularity or plurality, but not a specific plural number. (*)

                Cardinality tells "how many". (*)

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

11.          To identify an attribute as part of a unique identifier on an ER diagram, the # symbol goes in front of it. True or False?              Mark for Review

(1) Points

                True (*)

                False

12.          Entity names are always singular. True or False?                Mark for Review

(1) Points

                True (*)

                False

13.          Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?     Mark for Review

(1) Points

                True

                False (*)

14.          Matrix Diagrams are developed BEFORE the ERD. True or False?                Mark for Review

(1) Points

                True (*)

                False

15.          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

1.            Entity names are always singular. True or False?                Mark for Review

(1) Points

                True (*)

                False

2.            Entity boxes are drawn as            Mark for Review

(1) Points

                Normal Circles

                Hard Boxes

                Soft Boxes (*)

                Bold Circles

3.            Relationship names are not shown on an ERD. True or False?      Mark for Review

(1) Points

                True

                False (*)

4.            ERDish describes a relationship in words. True or False? Mark for Review

(1) Points

                True (*)

                False

5.            Which of the following are used to show a relationship on an ERD? (Choose Three)          Mark for Review

(1) Points

                                                (Choose all correct answers)      

                Crow's foot. (*)

                Solid line. (*)

                # symbol.

                Dashed line. (*)

6.            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

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

(1) Points

                                                (Choose all correct answers)      

                Cardinality specifies whether something is required or not.

                Cardinality tells "how many". (*)

                Cardinality specifies only singularity or plurality, but not a specific plural number. (*)

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

8.            Which of the following are true about Relationship Optionality? (Choose two)    Mark for Review

(1) Points

                                                (Choose all correct answers)      

                Optionality specifies only singularity or plurality, but not a specific plural number.

                Optionality answers "may or must". (*)

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

                Optionality specifies whether something is required or not. (*)

9.            In a business that sells pet food, choose the best relationship name between FOOD TYPE and ANIMAL (e.g. dog, horse, or cat). (Choose Two)            Mark for Review

(1) Points

                                                (Choose all correct answers)      

                Each FOOD TYPE may be given to one or more ANIMALs. (*)

                Each FOOD TYPE may be manufactured by one or more ANIMALs.

                Each FOOD TYPE must be suitable for one or more ANIMALs. (*)

                Each ANIMAL must be the seller of one or more FOOD TYPES.

10. What are the three properties that every relationship should have? Mark for Review

(1) Points

                Transferability, degree, name

                Name, optionality, arcs

                Name, optionality, cardinality (*)

                A UID bar, a diamond, an arc

11.          Relationship Cardinality is important. True or False?         Mark for Review

(1) Points

                True (*)

                False

12.          Relationships can be either mandatory or optional. True or False?            Mark for Review

(1) Points

                True (*)

                False

13.          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

14.          Matrix Diagrams are developed BEFORE the ERD. True or False?                Mark for Review

(1) Points

                True (*)

                False

15.          Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?     Mark for Review

(1) Points

                True

                False (*)

1.            Entity boxes are drawn as            Mark for Review

(1) Points

                Normal Circles

                Hard Boxes

                Bold Circles

                Soft Boxes (*)

2.            Entity names are always singular. True or False?                Mark for Review

(1) Points

                True (*)

                False

3.            Matrix Diagrams are developed BEFORE the ERD. True or False?                Mark for Review

(1) Points

                True (*)

                False

4.            Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?     Mark for Review

(1) Points

                True

                False (*)

5.            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

6.            Which of the following are used to show a relationship on an ERD? (Choose Three)          Mark for Review

(1) Points

                                                (Choose all correct answers)      

                # symbol.

                Dashed line. (*)

                Crow's foot. (*)

                Solid line. (*)

7.            When reading the relationships in an ERD, you are said to be speaking:  Mark for Review

(1) Points

                Entity-ish

                Relationship-ish

                Gibberish

                ERDish (*)

8.            Relationship names are not shown on an ERD. True or False?      Mark for Review

(1) Points

                True

                False (*)

9.            ERDish describes a relationship in words. True or False? Mark for Review

(1) Points

                True (*)

                False

10.          Which of the following are true about Relationship Optionality? (Choose two)    Mark for Review

(1) Points

                                                (Choose all correct answers)      

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

                Optionality answers "may or must". (*)

                Optionality specifies only singularity or plurality, but not a specific plural number.

                Optionality specifies whether something is required or not. (*)

11.          One Relationship can be mandatory in one direction and optional in the other direction. True or False?  Mark for Review

(1) Points

                True (*)

                False

12.          Relationships always exist between        Mark for Review

(1) Points

                3 or more attributes

                3 or more entities

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

                2 attributes

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

(1) Points

                                                (Choose all correct answers)      

                Cardinality specifies whether something is required or not.

                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. (*)

14. 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. (*)

                Crow's foot. (*)

                Dashed line.

                Solid line.

15.          What are the three properties that every relationship should have?        Mark for Review

(1) Points

                A UID bar, a diamond, an arc

                Transferability, degree, name

                Name, optionality, cardinality (*)

                Name, optionality, arcs