EXist
eXist-db (or eXist for short) 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-db provides XQuery and XSLT as its query and application programming languages.
 | A major contributor to this article appears to have a close connection with its subject. (February 2019) |
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| Original author(s) | Wolfgang Meier |
|---|---|
| Developer(s) | Pierrick Brihayne, Leif-Jöran Olsson, Adam Retter,[1] Dmitriy Shabanov, and Dannes Wessels. |
| Initial release | 2000 (2000) |
| Stable release | 6.2.0
/ February 4, 2023; 14 months ago (2023-02-04) |
| Repository | github |
| Written in | Java |
| Operating system | Linux, Mac, Windows |
| Platform | Java |
| Standard(s) | XML, XQuery, XSLT, XPath, XUpdate, XQJ, DTD, XML Schema, RelaxNG |
| Type | NoSQL DBMS |
| License | GNU LGPL v2.1. |
| Website | www |
eXist-db is released under version 2.1 of the GNU LGPL.
eXist-db allows software developers to persist XML/JSON/Binary documents without writing extensive middleware. eXist-db follows and extends many W3C XML standards such as XQuery. eXist-db 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-db allows users to "drag and drop" XML files directly into the eXist-db database. eXist-db automatically indexes documents using a keyword indexing system.[citation needed]
eXist-db was created in 2000 by Wolfgang Meier.
eXist-db was awarded the best XML database of the year by InfoWorld in 2006.[2]
The companies eXist Solutions GmbH in Germany, and Evolved Binary in the UK, promote and provide support for the software.[3][4]
There is an O'Reilly book for eXist-db which is co-authored by Adam Retter and Erik Siegel.[5]
| Version | Release date | Changes |
|---|---|---|
| 6.0.0 | January 27, 2022 | Fixes for Log4Shell vulnerability and breaking changes to bundled Apache XML-RPC libraries to resolve security issues.[6] |
| 5.0.0 | September 2, 2019 | More than 1,400 commits including improvements to document and collection locking, migration of build system from Apache Ant to Apache Maven, support removed for running eXist-db in Apache Tomcat.[7] |
| 4.0.0 | February 14, 2018 | New UserManager application, Cache Extension Module rewritten to use more performant Caffeine Java library, improvements to language search support, backward compatible with v3.[8] |
| 3.0.0 | February 9, 2017 | Almost 1,500 changes including support for XQuery v3.1, and updated version of Jetty with HTTP/2 support. Java 8 is now a requirement.[9] |
| 2.0.0 | February 2013 | Not backward compatible with v1. Changes to permission system to more closely follow UNIX permission model, web applications are stored in database rather than in webapp directory.[10] |
| 1.0.0 | October 2006 | |
eXist-db 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
- 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[11]
- "Adam Retter - O'Reilly Media". O’Reilly Media. Retrieved November 30, 2017.
- staff, InfoWorld (January 2, 2006). "2006 Technology of the Year Awards: The winners' list". InfoWorld.
- "About eXist Solutions". existsolutions.com. Retrieved September 23, 2016.
- "About Evolved Binary". evolvedbinary.com. Retrieved September 2, 2019.
- Siegel, Erik; Retter, Adam (2014). eXist : A NoSQL Document Database and Application Platform. O'Reilly Media. ISBN 978-1-4493-3710-0.
- "eXist-db 6.0.0". exist-db.org. January 2, 2022. Retrieved 2022-03-31.
- "eXist-db 5.0.0". exist-db.org. September 2, 2019. Retrieved 2022-03-31.
- "eXist-db v4.0.0". exist-db.org. February 14, 2018. Retrieved 2022-03-31.
- "eXist-db v3.0 available". exist-db.org. February 9, 2017. Retrieved 2022-03-31.
- "Known Issues when upgrading". exist-db.org. 2020. Retrieved 2022-03-31.
- "eXist XQJ API". xqj.net.