diff --git a/db/migrate/20140401004102_create_relative_memos.rb b/db/migrate/20140401004102_create_relative_memos.rb
index 6f0d776db..04b8862a3 100644
--- a/db/migrate/20140401004102_create_relative_memos.rb
+++ b/db/migrate/20140401004102_create_relative_memos.rb
@@ -4,7 +4,7 @@ class CreateRelativeMemos < ActiveRecord::Migration
       t.integer :osp_id, :null => true
       t.integer :parent_id, null: true
       t.string :subject, null: false
-      t.mediumtext :content, null: false
+      t.text :content, null: false
       t.integer :author_id
       t.integer :replies_count, default: 0
       t.integer :last_reply_id
diff --git a/db/migrate/20140603033359_add_boards_type_to_boards.rb b/db/migrate/20140603033359_add_boards_type_to_boards.rb
index 76193b642..ea06cc200 100644
--- a/db/migrate/20140603033359_add_boards_type_to_boards.rb
+++ b/db/migrate/20140603033359_add_boards_type_to_boards.rb
@@ -2,13 +2,17 @@ class AddBoardsTypeToBoards < ActiveRecord::Migration
   def change
     add_column :boards, :course_id, :int
 
-    Board.all.each do |board|
-      project = Project.find_by_id(board.project_id)
-      if project && project.project_type == 1
-        board.course_id = board.project_id
-        board.project_id = nil
-        board.save
-      end
-    end
+    Board.where('project_id IN (SELECT id FROM projects WHERE project_type=1)').update_all("course_id = project_id")
+    Board.where('project_id IN (SELECT id FROM projects WHERE project_type=1)').update_all(project_id: -1)
+
+    #Board.all.each do |board|
+    #  project = Project.find_by_id(board.project_id)
+    # if project && project.project_type == 1
+    #    board.course_id = board.project_id
+    #   board.project_id = -1
+    #    board.save
+    #  end
+    # end
+
   end
 end
diff --git a/db/migrate/20140603081801_add_courseid_to_enabled_modules.rb b/db/migrate/20140603081801_add_courseid_to_enabled_modules.rb
index baa1ef81d..e31c3f953 100644
--- a/db/migrate/20140603081801_add_courseid_to_enabled_modules.rb
+++ b/db/migrate/20140603081801_add_courseid_to_enabled_modules.rb
@@ -2,13 +2,16 @@ class AddCourseidToEnabledModules < ActiveRecord::Migration
   def change
     add_column :enabled_modules, :course_id, :int
 
-    EnabledModule.all.each do |enablemodule|
-      project = Project.find_by_id(enablemodule.project_id)
-      if project && project.project_type == 1
-        enablemodule.course_id = enablemodule.project_id
-        enablemodule.project_id = nil
-        enablemodule.save
-      end
-    end
+    EnabledModule.where('project_id IN (SELECT id FROM projects WHERE project_type=1)').update_all("course_id = project_id")
+    EnabledModule.where('project_id IN (SELECT id FROM projects WHERE project_type=1)').update_all(project_id: -1)
+
+    #EnabledModule.all.each do |enablemodule|
+    #  project = Project.find_by_id(enablemodule.project_id)
+    #  if project && project.project_type == 1
+    #    enablemodule.course_id = enablemodule.project_id
+    #    enablemodule.project_id = -1
+    #    enablemodule.save
+    #  end
+    #end
   end
 end
diff --git a/db/migrate/20140604011630_add_courseid_to_to_members.rb b/db/migrate/20140604011630_add_courseid_to_to_members.rb
index 14111c1b9..b52a26924 100644
--- a/db/migrate/20140604011630_add_courseid_to_to_members.rb
+++ b/db/migrate/20140604011630_add_courseid_to_to_members.rb
@@ -1,15 +1,21 @@
 class AddCourseidToToMembers < ActiveRecord::Migration
   def change
     add_column :members, :course_id, :int
+    change_column_null(:members, :project_id, true)
+    remove_index :members, name: 'index_members_on_user_id_and_project_id'
+    add_index "members", ["user_id", "project_id","course_id"], :name => "index_members_on_user_id_and_project_id", :unique => true
+
+    Member.where('project_id IN (SELECT id FROM projects WHERE project_type=1)').update_all("course_id = project_id")
+    Member.where('project_id IN (SELECT id FROM projects WHERE project_type=1)').update_all(project_id: -1)
 
     # 课程成员数据迁移
-    Member.all.each do |member|
-      project = Project.find_by_id(member.project_id)
-      if project && project.project_type == 1
-        member.course_id = member.project_id
-        member.project_id = nil
-        member.save
-      end
-    end
+    #Member.all.each do |member|
+    #  project = Project.find_by_id(member.project_id)
+    #  if project && project.project_type == 1
+    #    member.course_id = member.project_id
+    #    member.project_id = -1
+    #   member.save
+    #  end
+    #end
   end
 end
diff --git a/db/schema.rb b/db/schema.rb
index 34629bc09..470440fc2 100644
--- a/db/schema.rb
+++ b/db/schema.rb
@@ -11,7 +11,7 @@
 #
 # It's strongly recommended to check this file into your version control system.
 
-ActiveRecord::Schema.define(:version => 20140603081801) do
+ActiveRecord::Schema.define(:version => 20140604011630) do
 
   create_table "activities", :force => true do |t|
     t.integer "act_id",   :null => false
@@ -57,14 +57,11 @@ ActiveRecord::Schema.define(:version => 20140603081801) do
   add_index "attachments", ["container_id", "container_type"], :name => "index_attachments_on_container_id_and_container_type"
   add_index "attachments", ["created_on"], :name => "index_attachments_on_created_on"
 
-  create_table "attachmentstypes", :id => false, :force => true do |t|
-    t.integer "id",                     :null => false
-    t.integer "typeId"
+  create_table "attachmentstypes", :force => true do |t|
+    t.integer "typeId",                 :null => false
     t.string  "typeName", :limit => 50
   end
 
-  add_index "attachmentstypes", ["id"], :name => "id"
-
   create_table "auth_sources", :force => true do |t|
     t.string  "type",              :limit => 30, :default => "",    :null => false
     t.string  "name",              :limit => 60, :default => "",    :null => false
@@ -519,13 +516,14 @@ ActiveRecord::Schema.define(:version => 20140603081801) do
 
   create_table "members", :force => true do |t|
     t.integer  "user_id",           :default => 0,     :null => false
-    t.integer  "project_id",        :default => 0,     :null => false
+    t.integer  "project_id",        :default => 0
     t.datetime "created_on"
     t.boolean  "mail_notification", :default => false, :null => false
+    t.integer  "course_id"
   end
 
   add_index "members", ["project_id"], :name => "index_members_on_project_id"
-  add_index "members", ["user_id", "project_id"], :name => "index_members_on_user_id_and_project_id", :unique => true
+  add_index "members", ["user_id", "project_id", "course_id"], :name => "index_members_on_user_id_and_project_id", :unique => true
   add_index "members", ["user_id"], :name => "index_members_on_user_id"
 
   create_table "memos", :force => true do |t|
@@ -710,7 +708,7 @@ ActiveRecord::Schema.define(:version => 20140603081801) do
   end
 
   create_table "relative_memos", :force => true do |t|
-    t.integer  "osp_id",                                :null => false
+    t.integer  "osp_id"
     t.integer  "parent_id"
     t.string   "subject",                               :null => false
     t.text     "content",                               :null => false