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Last active September 18, 2018 22:03
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ModelsDatabasesRelationships.md

Models, Databases, Relationships in Rails

What is the difference between a primary key and a foreign key? Where would we find a primary key? What would it be called by default? Where would we find a foreign key? What is the naming convention for a foreign key?

Write down one example of:

  • a one-to-one relationship.
  • a one-to-many relationship.
  • a many-to-many relationship.
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