David Cressey wrote:
>
> [...] A cursor is a named query, declared in the
> context of a user process (program), that can be invoked to play the role
> of a list. I haven't seen cursors discussed as if they were lists, but it
> seems to make an eminent amount of sense to me.
Really? Cursors are an inherent procedural concept and I would think
that is the last thing you want in what should be a declarative query
and manipulation langauge. Moreover, integrating lists and bags into a
declarative set-oriented language is basically a solved problem as the
required ideas, knowledge and experience is already available in the
literature, although it is sometimes dressed up as "nested relational",
"object-oriented" or "xml" research.
Received on Mon Mar 20 2006 - 17:14:07 CST
