Using namespace in Xdefinition. Note that the prefix "bk" is used in the Xdefinition below. However, the prefix "books" is used in the input data.Using namespace in Xdefinition. Note that the prefix "bk" is used in the Xdefinition below. However, the prefix "books" is used in the input data.

Xdefinition
Input data
 You can edit both Xdefinition and/or Input data