Felix Flores felixflores

Overview

To create any non-trivial application, you need some way of persisting data. While there are a lot solutions available, Datomic, Neo4j, Samza, just to name a few, but for various reasons, a lot of us still use relational databases. One reason might be because there is a pre-existing Rails application that still needs to interoperate with the Clojure application you are building. Another reason could be because of the exisiting deployment environment requires you to use a certain type of database (I encountered this first hand while working for a large client).

+--------------+          +---------------+
|              |          |               |
|     Ruby     |          |               |
|      on      |          |   Compojure   |
|     Rails    |          | (Clojure app) |

	;; -- mode: emacs-lisp --
	;; This file is loaded by Spacemacs at startup.
	;; It must be stored in your home directory.

	(defun dotspacemacs/layers ()
	"Configuration Layers declaration.
	You should not put any user code in this function besides modifying the variable
	values."
	(setq-default
	;; Base distribution to use. This is a layer contained in the directory

	class Student < ActiveRecord::Base
	has_many :assignments
	end

	class Assignment < ActiveRecord::Base
	belongs_to :student
	end

	students table

	id name
	1 Felix
	2 John
	3 Bob

	assignments table

	id student_id number status