RelationalDBDesign
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One-to-one Relationships - Exercise
Objective:
Identify one-to-one relationships
Exercise scoring
This exercise is worth a total of 15 points. You will receive up to five points for each correctly composed and plausible business rule according to the instructions below.
Background/overview
You learned that a one-to-one relationship is defined as a relationship that exists when zero or one instance of entity A can be associated with zero or one instance of entity B, and zero or one instance of entity B can be associated with zero or one instance of entity A. You also learned that 1:1 relationships are rare in the business world.
Instructions
Compose three business rules that reflect a one-to-one relationship between two entities. Try to make your rules as realistic as possible.
Submitting your Exercise
Type or paste your answers into the text box below, then click
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