text: --
  -- Knowledge Fragment
  -- 
  ALTER TABLE fragment ADD COLUMN password VARCHAR(100);
  
  --
  -- Creator and Updater of Entity
  -- 
  
  ALTER TABLE fragment ADD COLUMN creator VARCHAR(200);
  ALTER TABLE fragment ADD COLUMN updater VARCHAR(200);
  
  ALTER TABLE tag ADD COLUMN creator VARCHAR(200);
  ALTER TABLE tag ADD COLUMN updater VARCHAR(200);
  
  ALTER TABLE filter ADD COLUMN creator VARCHAR(200);
  ALTER TABLE filter ADD COLUMN updater VARCHAR(200);
  
  ALTER TABLE fragment_relation ADD COLUMN creator VARCHAR(200);
  ALTER TABLE fragment_relation ADD COLUMN updater VARCHAR(200);
  
  --
  -- Re-create full text search index for the table "fragment"
  -- 
  CALL FT_REINDEX();
  