SQL Anywhere provides two ways to export your relational data as XML: the Interactive SQL OUTPUT statement and the ADO.NET DataSet object.
The FOR XML clause and SQL/XML functions allow you to generate a result set as XML from the relational data in your database. You can then export the generated XML to a file using the UNLOAD statement or the xp_write_file system procedure.
Exporting relational data as XML from Interactive SQL
Exporting relational data as XML using the DataSet object