In article <9earpo$def$01$1_at_news.t-online.com>, Carl Rosenberger says...
>
>Queries return a tree structure.
>
I'm sorry to sidetrack here, but
- Does anybody know 'must read' theoretical paper about queries on tree
structures?
- Is tree querieng based on a similar foundation as cylindric algebras and
Tarski's Algebraization Theorem in relational case? My ignorant assumption here
is that the absence of such a nice theory makes querying tree structures
difficult to impossible, but I'd like to learn more:-)
Received on Mon May 21 2001 - 13:30:43 CDT
