Rails implements the REST architecture when creating web apps. This means that many components of a Rails application (ie. blog posts and/or users) are modeled as resources that follow CRUD operations that correspond to the four fundamental HTTP request methods. CRUD stands for Create, Read, Update, and Destroy. These are the major functions that are implemented in relational database applications that allow for resources (such as blog posts) to be, well, created, read, updated, and deleted. Now the four fundamental HTTP request methods are GET, POST, PUT, and DELETE. These request methods, or verbs, indicate the desired operation (CRUD) to be performed on resources. Here’s a table illustrating these operations and their corresponding HTTP requests.