Ecto

Ecto is the database wrapper and query generator for Elixir.

Ecto vs. Absinthe?

• Ecto is a library for interacting with databases.
• Absinthe is a library for building GraphQL APIs

https://hexdocs.pm/ecto/getting-started.html

defmodule Friends.Person do
  use Ecto.Schema
 
  schema "people" do
    field :first_name, :string
    field :last_name, :string
    field :age, :integer
  end
end

• In this case, we’re telling Ecto that the Friends.Person schema maps to the people table in the database

This new code will tell Ecto to create a new table called people, and add three new fields: first_name, last_name and age to that table. The types of these fields are string and integer.

inserting data is like this

person = %Friends.Person{}
Friends.Repo.insert(person)

In Ecto, you may wish to validate changes before they go to the database. For instance, you may wish that a person has both a first name and a last name before a record can be entered into the database.

Ecto.Changeset

Changesets allow filtering, casting, validation and definition of constraints when manipulating structs.

Ecto.Repo

A repository maps to an underlying data store, controlled by the adapter. For example, Ecto ships with a Postgres adapter that stores data into a PostgreSQL database.