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Learn how relationships depend on essential “key” fields, then plan the relationships you’ll use in the sample app.
In this video, you will:
* Understand a common type of relationship: learn about the “one-to-many” relationship (0:38)
* Define primary and foreign keys: see how a lack of key fields can lead to messy data (1:00)
* Find your relationships: determine how your app’s tables should relate to each other (2:40)