<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:

def database_caller_creator(self, name=None):
        '''creates a couchdb database
        returns the related connection object
        which will be later used to spawn the cursor
        '''

        couch = couchdb.Server()

        if name:
            db = couch.create(name)
        else:
            n = 'couchdb_' + lower_str_generator(self)
            db = couch.create(n)
            logger.warning('couchdb database created with the name: %s', n,
                           extra=d)

        return db