マークダウンの練習

データベース設計の際、READMEに記述するマークダウンの練習です

messages table

belongs_to :user

belongs_to :group

column	type	Restriction
body	text	-
image	string	-
group_id	integer	null:false,foreign_key:true
user_id	integer	null:false,foreign_key:true

users table

has_many :messages , through: :users_groups

has_many :groups

column	type	Restriction
name	text	null:false , add_index
email	string	null:false , uniqe:true
password	integer	null:false , foreign_key:true

groups table

has_many :messages , through: :users_groups

has_many :users

column	type	Restriction
name	text	null:false , uniqe:true

users_groups table

belongs_to :user

belongs_to :group

column	type	Restriction
user_id	integer	foreign_key: true
group_id	integer	foreign_key: true