diff --git a/db/migrate/20200913091950_create_users.rb b/db/migrate/20200913091950_create_users.rb
index 05cf105..b726e0c 100644
--- a/db/migrate/20200913091950_create_users.rb
+++ b/db/migrate/20200913091950_create_users.rb
@@ -1,10 +1,10 @@
 class CreateUsers < ActiveRecord::Migration[6.0]
     def change
         create_table :users, id: :uuid, default: -> { "gen_random_uuid()" } do |t|
-            t.string :email
-            t.string :password
-            t.string :username
-            t.integer :granblue_id
+            t.string :email, :unique => true
+            t.string :password_digest
+            t.string :username, :unique => true
+            t.integer :granblue_id, :unique => true
 
             t.timestamps
         end
diff --git a/db/migrate/20200923205642_create_doorkeeper_tables.rb b/db/migrate/20200923205642_create_doorkeeper_tables.rb
new file mode 100644
index 0000000..c071193
--- /dev/null
+++ b/db/migrate/20200923205642_create_doorkeeper_tables.rb
@@ -0,0 +1,70 @@
+# frozen_string_literal: true
+
+class CreateDoorkeeperTables < ActiveRecord::Migration[6.0]
+    def change
+        create_table :oauth_applications, id: :uuid do |t|
+            t.string  :name,         null: false
+            t.string  :uid,          null: false
+            t.string  :secret,       null: false
+            t.text    :redirect_uri, null: false
+            t.string  :scopes,       null: false, default: ''
+            t.timestamps             null: false
+        end
+
+        add_index :oauth_applications, :uid, unique: true
+
+        create_table :oauth_access_grants, id: :uuid do |t|
+            t.uuid     :resource_owner_id, null: false
+            t.uuid     :application_id,    null: false
+            t.string   :token,             null: false
+            t.integer  :expires_in,        null: false
+            t.text     :redirect_uri,      null: false
+            t.datetime :created_at,        null: false
+            t.datetime :revoked_at
+            t.string   :scopes
+        end
+
+        add_index :oauth_access_grants, :token, unique: true
+        add_foreign_key(
+            :oauth_access_grants,
+            :oauth_applications,
+            column: :application_id
+        )
+
+        create_table :oauth_access_tokens, id: :uuid do |t|
+            t.uuid  :resource_owner_id
+            t.uuid  :application_id
+
+            # If you use a custom token generator you may need to change this column
+            # from string to text, so that it accepts tokens larger than 255
+            # characters. More info on custom token generators in:
+            # https://github.com/doorkeeper-gem/doorkeeper/tree/v3.0.0.rc1#custom-access-token-generator
+            #
+            # t.text     :token,             null: false
+            t.string   :token,                  null: false
+
+            t.string   :refresh_token
+            t.integer  :expires_in
+            t.datetime :revoked_at
+            t.datetime :created_at,             null: false
+            t.string   :scopes
+
+            # If there is a previous_refresh_token column,
+            # refresh tokens will be revoked after a related access token is used.
+            # If there is no previous_refresh_token column,
+            # previous tokens are revoked as soon as a new access token is created.
+            # Comment out this line if you'd rather have refresh tokens
+            # instantly revoked.
+            t.string   :previous_refresh_token, null: false, default: ""
+        end
+
+        add_index :oauth_access_tokens, :token, unique: true
+        add_index :oauth_access_tokens, :resource_owner_id
+        add_index :oauth_access_tokens, :refresh_token, unique: true
+        add_foreign_key(
+            :oauth_access_tokens,
+            :oauth_applications,
+            column: :application_id
+        )
+    end
+end
diff --git a/db/schema.rb b/db/schema.rb
index a7581b5..f20fa3c 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -10,12 +10,11 @@
 #
 # It's strongly recommended that you check this file into your version control system.
 
-ActiveRecord::Schema.define(version: 2020_09_13_092045) do
+ActiveRecord::Schema.define(version: 2020_09_23_205642) do
 
   # These are extensions that must be enabled in order to support this database
   enable_extension "pgcrypto"
   enable_extension "plpgsql"
-  enable_extension "uuid-ossp"
 
   create_table "grid_weapons", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.uuid "party_id"
@@ -33,6 +32,44 @@ ActiveRecord::Schema.define(version: 2020_09_13_092045) do
     t.index ["weapon_key2_id"], name: "index_grid_weapons_on_weapon_key2_id"
   end
 
+  create_table "oauth_access_grants", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.uuid "resource_owner_id", null: false
+    t.uuid "application_id", null: false
+    t.string "token", null: false
+    t.integer "expires_in", null: false
+    t.text "redirect_uri", null: false
+    t.datetime "created_at", null: false
+    t.datetime "revoked_at"
+    t.string "scopes"
+    t.index ["token"], name: "index_oauth_access_grants_on_token", unique: true
+  end
+
+  create_table "oauth_access_tokens", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.uuid "resource_owner_id"
+    t.uuid "application_id"
+    t.string "token", null: false
+    t.string "refresh_token"
+    t.integer "expires_in"
+    t.datetime "revoked_at"
+    t.datetime "created_at", null: false
+    t.string "scopes"
+    t.string "previous_refresh_token", default: "", null: false
+    t.index ["refresh_token"], name: "index_oauth_access_tokens_on_refresh_token", unique: true
+    t.index ["resource_owner_id"], name: "index_oauth_access_tokens_on_resource_owner_id"
+    t.index ["token"], name: "index_oauth_access_tokens_on_token", unique: true
+  end
+
+  create_table "oauth_applications", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
+    t.string "name", null: false
+    t.string "uid", null: false
+    t.string "secret", null: false
+    t.text "redirect_uri", null: false
+    t.string "scopes", default: "", null: false
+    t.datetime "created_at", precision: 6, null: false
+    t.datetime "updated_at", precision: 6, null: false
+    t.index ["uid"], name: "index_oauth_applications_on_uid", unique: true
+  end
+
   create_table "parties", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.uuid "user_id"
     t.string "shortcode"
@@ -43,7 +80,7 @@ ActiveRecord::Schema.define(version: 2020_09_13_092045) do
 
   create_table "users", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
     t.string "email"
-    t.string "password"
+    t.string "password_digest"
     t.string "username"
     t.integer "granblue_id"
     t.datetime "created_at", precision: 6, null: false
@@ -51,14 +88,12 @@ ActiveRecord::Schema.define(version: 2020_09_13_092045) do
   end
 
   create_table "weapon_keys", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
-    t.bigint "weapon_id"
     t.string "name_en"
     t.string "name_jp"
     t.integer "series"
     t.integer "type"
     t.datetime "created_at", precision: 6, null: false
     t.datetime "updated_at", precision: 6, null: false
-    t.index ["weapon_id"], name: "index_weapon_keys_on_weapon_id"
   end
 
   create_table "weapons", id: :uuid, default: -> { "gen_random_uuid()" }, force: :cascade do |t|
@@ -83,4 +118,6 @@ ActiveRecord::Schema.define(version: 2020_09_13_092045) do
     t.integer "max_atk_ulb"
   end
 
+  add_foreign_key "oauth_access_grants", "oauth_applications", column: "application_id"
+  add_foreign_key "oauth_access_tokens", "oauth_applications", column: "application_id"
 end