Active Record Basics — Ruby on Rails Guides

This guide is an introduction to Active Record. After reading this guide, you will know: What Object Relational Mapping and Active Record are and how they are used in Rails. How Active Record fits into the Model-View-Controller paradigm. How to use Active Record models to manipulate data stored in a relational database. Active Record schema naming conventions. The concepts of database migrations,

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“Active Record Basics”

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Active Record Basics — Ruby on Rails Guides