code: def initialize(address='127.0.0.1:27017', database_name='hfos', instance_name="default", reload=False):
      
  
      global schemastore
      global l10n_schemastore
      global objectmodels
      global collections
      global dbhost
      global dbport
      global dbname
      global instance
      global initialized
  
      if initialized and not reload:
          hfoslog('Already initialized and not reloading.', lvl=warn, emitter="DB", frame_ref=2)
          return
  
      dbhost = address.split(':')[0]
      dbport = int(address.split(":")[1]) if ":" in address else 27017
      dbname = database_name
  
      db_log("Using database:", dbname, '@', dbhost, ':', dbport)
  
      try:
          client = pymongo.MongoClient(host=dbhost, port=dbport)
          db = client[dbname]
          db_log("Database: ", db.command('buildinfo'), lvl=debug)
      except Exception as e:
          db_log("No database available! Check if you have mongodb > 3.0 "
                 "installed and running as well as listening on port 27017 "
                 "of localhost. (Error: %s) -> EXIT" % e, lvl=critical)
          sys.exit(5)
  
      warmongo.connect(database_name)
  
      schemastore = _build_schemastore_new()
      l10n_schemastore = _build_l10n_schemastore(schemastore)
      objectmodels = _build_model_factories(schemastore)
      collections = _build_collections(schemastore)
      instance = instance_name
      initialized = True
docs: Initializes the database connectivity, schemata and finally object models