Ecto Associations: Modeling Database Relationships in Elixir

Connecting database tables correctly is essential for building reliable, data-driven applications. This text-based course guides you through modeling database structures using Ecto associations without overcomplicating your codebase. You will progress from understanding basic database concepts to confidently structuring one-to-one, one-to-many, and many-to-many relationships using idiomatic Elixir patterns. What you'll learn: - Understand core database relationship concepts and how Ecto maps them to Elixir schemas. - Configure belongs_to, has_many, and has_one associations to model real-world data. - Implement many-to-many relationships using join tables and schemas. - Query associated data efficiently using preloads to prevent performance bottlenecks. - Manage nested association changes safely using modern Ecto changeset functions. The course begins with foundational database concepts and basic Ecto schema definitions. You will then work through practical written explanations and code snippets, moving from simple relationships to advanced querying and nested data manipulation. This course is designed for beginner Elixir developers who have a basic understanding of the language and want to master database interactions. Start reading today to write cleaner, more efficient database code in Elixir.