Section

1.  Matrix Diagrams show Optionality and Cardinality of the ERDs they document. True or False?  Mark for Review  (1) Points 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 following are true about Cardinality? (Choose two)  Mark for Review  (1) Points (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 properties that every relationship should have?  Mark for Review  (1) Points 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 (*)