[Peter Muraya]

Hi,
I moved (by cut and pasting) the following facts from the code to an external file for consulting. There was a runtime problem that I traced to the data:: qualifier. Is that not legal? If not, what would be the reason?

Code: Select all

/*
This database keeps track of fields from which a user can infer how data is to be used, i.e., for identifying other data or for describing existing ones.*/
data_use_field_fact(data::name, "name").
data_use_field_fact(data::name, "value").
data_use_field_fact(data::name, "id").
data_use_field_fact(data::title, "title").
data_use_field_fact(data::title, "description").

[Thomas Linder Puls]

A saved fact database will never (and may not) contain class qualification. When saving/consulting a file there cannot be any ambiguities and subsequently there are no qualifiers. It could of course be made legal to have them anyway, but we have never really considered this.