Checkboxes in this pane are active only when EDB layers are both source and destination of the operation. If the user checks this box then for each feature of the layer being created, data fields will be stored which can be used for setting links with tables (see chapter 41 “Main EDB components”, subsection “Creating an EDB layer”).
If the box Create is checked then the box Copy data allows specifying whether values of fields of the source layer's user key should be copied.