Ecto is a database wrapper and query generator for Elixir, providing a powerful way to interact with databases. It supports migrations, schemas, and changesets for data validation.

Ecto is an essential library in the Elixir ecosystem that acts as a database wrapper and query generator, making it easier to interact with databases in a structured manner. It provides a set of tools for defining schemas that represent your database tables, allowing you to map Elixir data structures to database records seamlessly. Ecto's support for migrations enables you to version control your database schema, making it simple to apply changes over time and ensure consistency across development, testing, and production environments. You can create migration files using the mix ecto.gen.migration command, and Ecto provides a DSL for defining changes in a clear and concise manner. In addition to schemas and migrations, Ecto also offers changesets, which are powerful tools for data validation and transformation. Changesets allow you to define constraints and rules for your data, ensuring that only valid data is inserted into the database. Ecto also includes a powerful query DSL that allows you to build complex queries using Elixir syntax, making it easier to construct and execute database queries in a readable way. By leveraging Ecto, you can streamline database interactions in your Elixir applications, improve maintainability, and ensure data integrity throughout your application lifecycle.