class_docstr: Class to represent a relationship between dataframes
  
  See Also:
      :class:`.EntitySet`
class_docstr_tok: ["Class","to","represent","a","relationship","between","dataframes","See","Also",":",":","class",":","`",".EntitySet","`"]
docstr: The name of the child, relative to the parent.
docstr_tok: ["The","name","of","the","child",",","relative","to","the","parent","."]
code: def child_name(self):
      """The name of the child, relative to the parent."""
      if self._is_unique():
          return self._child_dataframe_name
      else:
          return "%s[%s]" % (
              self._child_dataframe_name,
              self._child_column_name,
          )
  
label_desc: Use image node_id 11 for calling the Relationship obj's underlying member method code with example usage: obj.child_name() and returns: self, unknown