Misconception: Students mix up whether model class names and database table names should be singular or plural in Ruby on Rails.

Model class names should be singular with the first letter of each word capitalized.

For example, a model class might be named LineItem.

Database table names should be plural with underscores separating words.

For example, a database table might be named line_items.

Note from the CS Teaching Tips Team: For more examples, check out the Ruby on Rails guide to naming conventions.

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