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<html>
<head>
<meta title="Welcome to HyperGraphDB"/>
</head>
<body>
<center>
<h1>README</h1>
<h2>HyperGraphDB, Release 1.1</h2>
</center>
<h2>Contents</h2>
<ul>
<li><a href=#introduction>Introduction</a>
<li><a href=#changes>Changes</a>
<li><a href=#install>System Requirementsand and Installation</a>
<li><a href=#license>Licensing</a>
<li><a href=#documentation>Documentation</a>
<li><a href=#bugs>Bug Reports and Feedback</a>
<li><a href=#redistribution>Redistribution</a>
</ul>
<a name="changes">
<h2>Changes</h2>
<p>
This release is a maintenance release containing many small improvements across
the different sub-systems of the database. A list of changes can be found at:
</p>
<a href="http://www.hypergraphdb.org/learn?page=NextReleaseNotes&project=hypergraphdb">
Changes for HyperGraphDB, Release 1.1</a> wiki page.
<p>
The most notable improvements in this release are:
<ol>
<li>Implementation of full MVCC transactions with unbounded read isolation. Both
the RAM cache of atoms and on disk storage are manipulated and synchronized
through MVCC transactions and one can traverse an unlimited number of atoms in an
isolated transaction without locking/blocking and without running out of memory.</li>
<li>
Refactoring of the low-level storage implementation to allow for easier customization
of back-end storage, handle (i.e. id) generation and type system boostrapping. All
those were architecturally possible in the previous release, but there wasn't explicit
API support for them.
</li>
<li>
Numerous bug fixes and adjustments based on user feedback since the 1.0 release.
</li>
</ol>
</p>
<a name="introduction">
<h2>Introduction</h2>
<p>
Thank you for downloading the HyperGraphDB distribution, release 1.1.
HyperGraphDB is an innovative database management system geared towards
the complexities and open-endedness of modern, data intensive
information systems, in particular the semantic web, artificial intelligence,
networks research and object-orientation.
</p>
<p>
HyperGraphDB is an embedded database, based on the Java platform and the
robust and high-performance BerkeleyDB storage system.
</p>
<a name="install">
<h2>System Requirements and Installation</h2>
<ul>
<li>Java 5 or later is required to compile and/or run HyperGraphDB.</li>
<li>A fairly recent version of Linux 32bit/AMD64 or Windows 32bit/AMD64 is
required for prebundled BerkeleyDB libraries to run, OR</li>
<li>Any platform that will run Java 5 and BerkeleyDB 5.0.</li>
</ul>
<a name="license">
<h2>Licensing</h2>
<p>
HyperGraphDB is open-sourced software licensed under the
<a target="_blank" href="http://www.gnu.org/licenses/lgpl.html">
GNU Lesser General Public License</a>. This
essentially means that you are allowed to use it for any purpose you see fit, free
of charge. Unlike GPL, the LGPL doesn't require you to make the source code of
your software available for free.
</p>
<p>
Third party software that HyperGraphDB relies is licensed separately. Here is
a list of all licenses you may need to accept in order to use HyperGraphDB:
<ul>
<li><a target="_blank" href="ThirdPartyLicensing/BERKELEYDB_LICENSE.TXT">
BerkeleyDB license</a></li>
<li><a target="_blank" href="http://www.igniterealtime.org/builds/smack/docs/latest/README.html">
Smack license</a></li>
</ul>
</p>
<a name="documentation">
<h2>Documentation</h2>
<p>
The following documentation is currently available:
<ul>
<li>
<a target="_blank" href="http://www.hypergraphdb.org/learn?project=hypergraphdb&page=FirstSteps">Tutorial</a> -
walks you over most of what you need to develop real-world applications with
HyperGraphDB.
</li>
<li>
<a target="_blank" href="http://www.hypergraphdb.org/learn?project=hypergraphdb&page=QuestionsAndAnswers">Q&A</a> - information in question and answer format.
</li>
<li>
<a target="_blank" href="http://www.hypergraphdb.org/learn?project=hypergraphdb&page=HyperGraphDBApplications">
HyperGraphDB Application</a> - APIs and application integrating HyperGraphDB
with other software such WordNet and a Prolog language interpreter as well as
implementions of industry standards such topics maps and OWL (upcoming).
</li>
<li>
An API reference in the form of Javadocs is available online and it is also
included within this distribution for offline use:
<ul>
<li><a target="_blank" href="http://www.hypergraphdb.org/javadocs/hgcore/index.html">Online HyperGraphDB Javadocs</a></li>
<li><a target="_blank" href="javadoc/index.html">Offline HyperGraphDB Javadocs</a></li>
</ul>
Since we update the online documentation with each new release, the offline
version will be more accurate for the release contained within this distribution.
</li>
</ul>
<a name="bugs">
<h2>Bug Repors and Feedback</h2>
<p>
Please provide by writing on the HyperGraphDB discussion forum:
<a target="_blank" href="http://groups.google.com/group/hypergraphdb?lnk=srg">
http://groups.google.com/group/hypergraphdb</a>
</p>
<p>
Bug reports can be posted on the project pages:
<a target="_blank" href="http://code.google.com/p/hypergraphdb/issues/list">
HyperGraphDB Project Bug Tracker at Google</a>
</p>
<a name="redistribution">
<h2>Redistribution</h2>
<p>
We may redistribute only HyperGraphDB binaries and third party dependencies
according as permitted by corresponding license agreements.
</p>
<p>
Documentation on how to compile and deploy HyperGraphDB can be found
on the <a target="_blank" href="http://www.hypergraphdb.org/learn?project=hypergraphdb&page=CompilationAndDeployment">compilation and deployment</a> wiki page.
</p>
<hr>
<p style="font-size:8pt">
Copyright (c) <a target="_blank" href="http://www.kobrix.com">Kobrix Software, Inc.</a>, 2005-2010
</p>
</body>
</html>
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