Object database: Difference between revisions

Revision as of 17:45, 14 August 2019

Revision as of 03:09, 23 September 2019

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* 2004 db4o's commercial launch as db4objects, Inc.

* 2008 db4o acquired by [[Versant Corporation]]

* 2010 [[VMware]] acquires GemStone<ref>{{Cite web|url=http://www.vmware.com/company/news/releases/spring-gemstone.html|title=SpringSource to Acquire Gemstone Systems Data Management Technology|date=May 6, 2010|accessdate=August 5, 2014|publisher=WMware|deadurlurl-status=nolive|archiveurl=https://web.archive.org/web/20140808042307/http://www.vmware.com/company/news/releases/spring-gemstone.html|archivedate=August 8, 2014|df=}}</ref>

* 2012 [[Wakanda (software)|Wakanda]] first production versions with open source and commercial licenses

* 2013 GemTalk Systems acquires [[Gemstone (database)|Gemstone]] products from VMware<ref name=gemtalk1>{{Cite web|url=http://www.prweb.com/releases/gemtalksystems/acquires-gemstone-s/prweb10652596.htm|author=GemTalk Systems|publisher=PRWeb|date=May 2, 2013|title=GemTalk Systems Acquires GemStone/S Products from VMware|accessdate=August 5, 2014|deadurlurl-status=nolive|archiveurl=https://web.archive.org/web/20140810224807/http://www.prweb.com/releases/gemtalksystems/acquires-gemstone-s/prweb10652596.htm|archivedate=August 10, 2014|df=}}</ref>

* 2014 [[Realm (database)|Realm]] <ref>{{cite web|url=https://www.infoq.com/news/2016/11/Realm-database-nodejs|title=Realm Releases Object Database for Node.js|author=|date=|website=InfoQ|deadurlurl-status=nolive|archiveurl=https://web.archive.org/web/20170202043544/https://www.infoq.com/news/2016/11/Realm-database-nodejs|archivedate=2017-02-02|df=}}</ref>

==Adoption of object databases==

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[[XQuery|XQuery v1]] and [[XPath 2.0|XPath v2]] are extremely complex (no [[Free and open-source software|FOSS software]] is implementing these standards more than 10 years after their publication) when compared to [[XPath#Syntax and semantics (XPath 1.0)|XPath v1]] and [[XSLT|XSLT v1]], and [[XML]] did not fit all community demands as an [[Open standard|open format]]. Since the early 2000s [[JSON]] has gained community adoption and popularity in applications, surpassing XML in the 2010s. [[JSONiq]], a query-analog of XQuery for JSON (sharing XQuery's core expressions and operations), demonstrated the functional equivalence of the JSON and XML formats. In this context, the main strategy of OODBMS maintainers was to retrofit JSON to their databases (by using it as the internal data type).

In January 2016, with the [[PostgreSQL|PostgreSQL 9.5 release]]<ref>{{cite web|url=https://www.postgresql.org/docs/current/static/functions-json.html|title=PostgreSQL: Documentation: 10: 9.15. JSON Functions and Operators|author=|date=|website=www.postgresql.org|deadurlurl-status=nolive|archiveurl=https://web.archive.org/web/20160518071030/http://www.postgresql.org/docs/current/static/functions-json.html|archivedate=2016-05-18|df=}}</ref> was the first FOSS OODBMS to offer an efficient JSON internal datatype (JSONB) with a complete set of functions and operations, for all basic relational and non-relational manipulations.

==Comparison with RDBMSs==