Active Record Pattern

The Active Record pattern is an architectural pattern used in software development that maps database tables to objects in code, where each object instance corresponds to a row in the table. It combines data access logic and business logic within the same object, providing methods for CRUD (Create, Read, Update, Delete) operations directly on the object. This pattern simplifies database interactions by abstracting SQL queries into object-oriented methods, making it popular in ORM (Object-Relational Mapping) frameworks.

Also known as: ActiveRecord, Active Record, AR Pattern, Active Record ORM, ActiveRecord Pattern

Why learn Active Record Pattern?

Developers should learn the Active Record pattern when building applications that require straightforward database operations with minimal boilerplate code, such as web applications using frameworks like Ruby on Rails or Laravel. It is particularly useful for rapid prototyping and projects where the database schema closely aligns with the domain model, as it reduces the need for separate data access layers and speeds up development. However, it may be less suitable for complex business logic or large-scale applications where separation of concerns is critical.

Learning Resources

• docs: Martin Fowler's Active Record Pattern
• tutorial: Ruby on Rails Guides: Active Record Basics
• docs: Laravel Eloquent ORM Documentation
• video: Active Record Pattern Explained - YouTube
• book: Patterns of Enterprise Application Architecture Book