eXist is an open source software project for NoSQL databases built on XML technology. It is classified as both a NoSQL document-oriented database system and a native XML database (and it provides support for XML, JSON, HTML and Binary documents). Unlike most relational database management systems (RDBMS) and NoSQL databases, eXist provides XQuery and XSLT as its query and application programming languages.
|Original author(s)||Wolfgang Meier|
|Developer(s)||Pierrick Brihayne, Leif-Jöran Olsson, Adam Retter, Dmitriy Shabanov, and Dannes Wessels.|
3.6.0 / November 26, 2017
|Operating system||Linux, Mac, Windows|
|Standard(s)||XQuery XSLT XPath XUpdate XQJ DTD XML Schema RelaxNG XML|
|License||GNU LGPL v2.1.|
eXist is released under version 2.1 of the GNU LGPL.
eXist was created in 2000 by Wolfgang Meier. Major versions released were 1.0 in September 2006, 2.0 in February 2013, and 3.0 in February 2017.
A company called eXist Solutions GmbH in Germany promotes the software.
There is an O'Reilly book for eXist which is co-authored by Adam Retter and Erik Siegel.
eXist allows software developers to persist XML/JSON/Binary documents without writing extensive middleware. eXist follows and extends many W3C XML standards such as XQuery. eXist also supports REST interfaces for interfacing with AJAX-type web forms. Applications such as XForms may save their data by using just a few lines of code. The WebDAV interface to eXist allows users to "drag and drop" XML files directly into the eXist database. eXist automatically indexes documents using a keyword indexing system.
Supported standards and technologiesEdit
eXist has support for the following standards and technologies:
- XPath - XML Path language
- XQuery - XML Query language
- XSLT - Extensible Stylesheet Language Transformations
- XSL-FO - XSL Formatting Objects
- WebDAV - Web distributed authoring and versioning
- REST - Representational state transfer (URL encoding)
- RESTXQ - RESTful annotations for XQuery
- SOAP - Simple Object Access Protocol
- XACML - XML Access Control Language
- XInclude - server-side include file processing (limited support)
- XML-RPC - a remote procedure call protocol
- XProc - a XML Pipeline processing language
- XQuery API for Java