How's XPath implemented ??

I know it can help extract a part of a XML nodes by some sort of queries.
But XML files are only plain text files, how can it be efficient especially dealing with large files ??
Does it have some sort of algorithm specifically to do so ??

I'm so sorry if my question is too naive...

Hi,
In case of XML, the XPath engine will fetch the required info which is indicated thru' your XPath expression...w/o you worrying abt the algorithm used for the searching of your XML documents.

Hope these links help....


http://cafeconleche.org/books/xmlja...pters/ch16.html

http://msdn.microsoft.com/library/d...ath_what_is.asp

Rgds,
Subha