Section 6
(Answer all questions in this section)

  1. An entity can only have one UID. True or False?

True

  False 



  2. A UID can be made up from the following: (Choose Two)

(Choose all correct answers)

  Attributes 

Entities

  Relationships 

Synonyms



  3. A unique identifier can only be made up of one attribute. True or False?

True

  False 



  4. People are not born with "numbers," but a lot of systems assign student numbers, customer IDs, etc. A 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.

  Artificial 

Unrealistic

Structured

Identification