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

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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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