December 2014
Beginner
584 pages
15h 13m
English
Content preview from eXistBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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.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.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.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.
Chapter 1. Introduction
What Is eXist?
As it turns out, this is quite a difficult question to answer. The problem lies in the wide audience that eXist serves. eXist is many things to many people, and thus there is no single succinct answer.
eXist is an open source piece of software written in Java that is freely available in both source code and binary form. eXist has always been made available under the Lesser GNU Public License (LGPL), version 2.1. While eXist makes use of many other open source libraries itself, all of these are compatible with the LGPL, and eXist eschews the GPL license in favor of freedom of choice for its users.
eXist was conceived as a native XML database. As a database, its unit of atomicity is the document, so we could very easily brand it a NoSQL document database. However, to do so would be to do an injustice to the software, and worse, to all of those who have contributed to making eXist much more than just a NoSQL database over the years.
Unlike most NoSQL databases, which each have their own proprietary database query language, eXist makes use of a standardized query language developed by the W3C: XML Query Language (XQuery). With a standard query language, you have the ability to write code that can be used not just on eXist, but on any platform or processor that supports XQuery. Some of the benefits of XQuery are that it is:
- Synergistic
XQuery was carefully designed and evolved over a six-year period by an open working group with many contributors, meaning ...
Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
and much more.
Read now
Unlock full access
More than 5,000 organizations count on O’Reilly
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.