Congratulations! You built a messaging app that uses a database to store messages. What can we generalize so far?

• A model represents a table in the database.
• A migration is a way to update the database with a new table, or changes to an existing table.
• Rails provides seven standard controller actions for doing common things such as display and create data
• Data can be displayed in the view using ERB web templating.
• Data can be saved into the database using a web form.