| <spreadsheet> | |
| <worksheet name="Writer"> | |
| <column name="name"/> | |
| <column name="books" many="true"/> | |
| </worksheet> | |
| <worksheet name="Book"> | |
| <column name="id"/> | |
| <column name="title"/> | |
| <column name="pages" datatype="integer"/> | |
| </worksheet> | |
| <reference source="Writer->books" | |
| target="Book->id"/> | |
| </spreadsheet> |