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: Column in child dataframe
docstr_tok: ["Column","in","child","dataframe"]
code: def child_column(self):
      """Column in child dataframe"""
      return self.child_dataframe.ww[self._child_column_name]
  
label_desc: Use image node_id 9 for calling the Relationship obj's underlying member method code with example usage: obj.child_column() and returns: self