January 2002
Beginner
480 pages
13h 15m
English
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The xdb components
The xdb components handle
<xdb/> packets.
The <xdb/> packets carry
data and storage/retrieval requests to and from the xdb components that
provide the Data Storage services.
On receipt of an
<xdb/> data packet,
an xdb component will retrieve data from or write data to a storage system
such as a collection of flat files or an RDBMS.
The
<xdb/>
packet shown in
Example 4-2
is carrying a request from the session manager to retrieve the preferences
stored in a private namespace for the user dj
(on Jabber server yak by the Jabber client JabberIM).
Example 4-2. An <xdb/> data packet
<xdb type='get' to='dj@yak' from='sessions' ns='jabberim:prefs' id='5'/>
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.