[Exist-open] Kind of queries supported

[<ba...@dc...>]

Hi all:

  I have been testing eXist 0.9 and have a few questions about the kind of
queries it supports.

  Can you query about numbers?
  
  For example, if we have newspapers in xml format and we have a tag value
with the year of publication, can we do Xpath queries with less than,
greater than, etc. about the year tag?

  If so, how you manage it internally? I think the full-text index
implementation is about strings, but i'm not sure.

  And, by other hand, in the doc you say it can search about regular
expressions on words, Does it work at high speed?

  Are queries about preffixes or suffixes of a word processed efficiently?
  
  If so, how are supported, in a classic approach (automata) or a new one?
  
  Thanks in advance,
  
    Mario Barcala