Data Validation
Programming maxim #1: Never trust user input. Data validation in our Model allows us to ensure that the data entered matches what we are expecting and are capable of storing in our database fields.
table
Database and Model
Now that your application is up and running, it is time to build your data store and interface with that data. We have two options here: We can create the database tables using Migrations or directly in the database, either through the database interface, a web interface, or an IDE interface.