How to use Active Record in Sinatra (RUBY) | by Yoonsung Kim | Medium
Creating Tables and Associations using Ruby/Active Record/Rake - DEV Community
How to Use Ruby on Rails Repositories and Active Record Model
Understanding Ruby on Rails ActiveRecord Validations | Web-Crunch
Active Recordの使い方 | Think IT（シンクイット）
Rails: How to Use Greater Than/Less Than in Active Record where Statements
Did Rails/ActiveRecord Railroad Our Timestamps? | Toptal®
Active Record Validations For Beginners | Ruby On Rails 7 Tutorial - YouTube
A Simple Ruby Application from Scratch with Active Record | The Codest
Active Record Associations — Ruby on Rails Guides
Object-Relational Mapping (Ruby Active Record)
Active Record Joins - Learneroo
The Active Record Design Pattern
Active Record Associations — Ruby on Rails Guides
初心者向け】RailsのActive Recordの解説&メソッドまとめ - Qiita
A Deep Dive into Active Record Validations - Honeybadger Developer Blog
Advanced Preloading Strategies in Rails with Custom Active Record Scopes | Keypup
Ruby on Rails Guides: A Guide to Active Record Associations
Create Active Record Self-Referential Relationships In Ruby on Rails | egghead.io
Rails Transaction: Active Record Transactions in Ruby on Rails - DEV Community
ruby on rails - Active Record, how to make N-N relationship properly? - Stack Overflow
Active Record pattern (or anti-pattern) - overview - Karol Dąbrowski
ORM Patterns: The Trade-Offs of Active Record and Data Mappers for Object-Relational Mapping - Thoughtful Code
