Test: Quiz: Artificial, Composite and Secondary UIDs

Section 1

1. A unique identifier can only be made up of one attribute. True or False? Mark for Review

(1) Points

True

False (*)

2. People are not born with "numbers", but a lot of systems assign student numbers, customer IDs, etc.ﾠA shoe has a color, a size, a style, but may not have a descriptive "number". So, to be able to uniquely and efficiently identify one instance of the entity SHOE, a/an ______________ UID can be created. Mark for Review

(1) Points

artificial (*)

unrealistic

structured

identification

3. A UID can be made up from the following: (Choose Two) Mark for Review

(1) Points

(Choose all correct answers)

Attributes (*)

Entities

Relationships (*)

Synonyms

4. An entity can only have one UID. True or False? Mark for Review

(1) Points

True

False (*)