You can use the Mapping editor to configure the existing mappings between your enterprise beans and database elements such as tables and views. The map information is stored in the map.mapxmi file, and the Mapping editor is the default editor for this file.
For more information about the editor, see Mapping editor. For information about creating your initial mappings that you can work with in the editor, see the topics: Generating a top-down mapping, Generate a bottom-up mapping1, or Generating a meet-in-the-middle mapping.
To open an existing mapping configuration (map.mapxmi file), do one of the following: