Primary or foreign key

Exercise and reference answers

Categories

1. Primary
2. Foreign

Questions

1. Answer

   Primary

   Question

   Identifies a row uniquely

2. Answer

   Foreign

   Question

   Links two relations

3. Answer

   Primary

   Question

   Chosen from the candidates

4. Answer

   Foreign

   Question

   Value comes from another table

5. Answer

   Primary

   Question

   May be made of two attributes

6. Answer

   Foreign

   Question

   Represents a relationship

Instructions

Pull each description towards the key it names.

Explanation