Phoenix Tutorial, part 4 - Ecto

Read and follow along with the Phoenix Guide:

Questions:

How do Ecto schemas compare to Rails/ActiveRecord models? Describe some similarities and differences.
What is the Repo module and what does it do?
What are changesets? What are some of the built-in validations you can use in them?
What's the Phoenix equivalent of rails console?
Query practice time! Given the example schema used in the tutorial:
```
schema "users" do
field :bio, :string
field :email, :string
field :name, :string
field :number_of_pets, :integer

timestamps()
end
```
- How would you write an Ecto query to return all users with more than one pet?
- How would you get the user with the most pets?
- How would you delete all users who don't have any pets?
- How would you get all new users from the past week?

BenRongey / BenApprenticeship