Database Reference
In-Depth Information
Open Source Competitors
Let's begin with the open source eXist competitors.
BaseX
BaseX is a lightweight native XML database with some application server facilities
written in Java. The project was started in 2005 by Christian Grün at the University
of Konstanz, and BaseX was released as open source in 2007. BaseX promotes ease of
use and provides an easy-to-use GUI frontend also written in Java.
Compared to eXist, BaseX adheres more closely to the W3C XQuery specifications,
achieving 99.9% compliance with the W3C XQuery 1.0 specification (eXist has
99.4%) and implementing the specifications for XQuery Update 1.0 and XQuery Full-
Text. eXist has an older draft implementation of XQuery Update and its own propri‐
etary full-text search. eXist, however, has been available for significantly longer, and
thus benefits from many more features, such as XSLT.
BaseX is released under the more liberal BSD license. Commercial support is
available for BaseX from BaseX GmbH, which was founded to support commercial
applications of BaseX.
Sedna
Sedna is a lightweight native XML database without application server capability,
written in C and C++. The origins of Sedna are not well documented, but it appears
to have started around 2003 as a project of the Institute for System Programming at
the Russian Academy of Sciences. Sedna seems to focus on providing core database
services and little more. While it has no REST Server of its own, it can be configured
to work as a module within the Apache HTTP Server.
Compared to eXist, Sedna supports more APIs for different programming languages
directly; eXist mostly assumes that developers will use its REST or RPC APIs, and
leaves language APIs to third-party providers. Sedna reports 98.8% compliance with
the W3C XQuery 1.0 specification; as mentioned previously, eXist has 99.4% compli‐
ance. Sedna, like eXist, implements its own proprietary full-text search, and a draft
version of XQuery Update.
Sedna is released under the Apache 2.0 license. There does not appear to be a com‐
mercial support offering for Sedna.
Closed Source, Commercial Competitors
Now we'll take a look at eXist competitors that are closed source and commercially
available.
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