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{{Infobox software
| logo                   = [[File:OrientdbLogo.png|280px]]
| screenshot             =
| caption                =
| developer              = [[Luca Garulli]]
| released               = {{Start-date|2010}}
| latest release version = 1.1
| latest release date    = {{Start date and age|2012|07|24}}
| frequently updated     = yes
| programming language   = [[Java (programming language)|Java]]
| operating system       = [[Cross-platform]]
| language               =
| status                 = Active
| genre                  = [[Graph database]]
| license                = Apache 2 License
| website                = {{URL|http://www.orientdb.org/}}
}}

'''OrientDB''' is an open source [[NoSQL]] [[database management system]] written in [[Java (programming language)|Java]]. Even if it is a document-based database, the relationships are managed as in graph databases with direct connections between records. It supports schema-less, schema-full and schema-mixed modes. It has a strong security profiling system based on users and roles and supports [[SQL]] as a query language. OrientDB uses a new indexing algorithm called MVRB-Tree, derived from the [[Red-Black Tree]] and from the [[B+Tree]]; this reportedly has benefits of having both fast insertions and ultra fast lookups.

== Features ==
* Transactional: supports [[ACID]] [http://code.google.com/p/orient/wiki/Transactions Transactions]. On crash it recovers pending documents.
* GraphDB: native management of graphs. 100% compliant with [http://blueprints.tinkerpop.com TinkerPop Blueprints] standard for [[Graph database]].
* [[SQL]]: supports [http://code.google.com/p/orient/wiki/SQL SQL language] with extensions to handle relationships without [[SQL join]], manage trees and graphs of connected documents
* Web ready: supports natively [[HTTP]], [[RESTful]] protocol and [[JSON]] without use 3rd party libraries and components.
* Run everywhere: the engine is 100% pure [[Java (programming language)|Java]]: runs on Linux, Windows and any system that supports Java technology.
* Embeddable: local mode to use the database bypassing the Server. Perfect for scenarios where the database is embedded.
* [[Apache 2 License]]: always free for any usage. No fees or royalties required to use it.
* Light: has a footprint of about 1Mb for the full server. No dependencies from other software. No other libraries needed.
* Commercial support available.

== References ==
{{Reflist}}

==See also==
{{Portal|Free software}}
* [[Document-oriented database]]
* [[Lotus Notes]]
* [[MongoDB]]
* [[CouchDB]]
* [[Couchbase]]
* [[CouchApp]]
* [[BrowserCouch]]
* [[Cassandra (database)|Cassandra]]
* [[XML database]]
* [[Mnesia]]
* [[Riak]]
* [[Neo4J]]

== External links ==
* [http://orientdb.org/ Official OrientDB website]
* [http://code.google.com/p/orient/ Code base on Google Code]
* [https://groups.google.com/forum/#!forum/orient-database Public technical group]

{{Comp-sci-stub}}

{{DEFAULTSORT:Orientdb}}
[[:Category:Free database management systems]]
[[:Category:Document-oriented databases]]
[[:Category:Distributed computing architecture]]
[[:Category:Structured storage]]
[[:Category:NoSQL]]
[[ar:اورينت دي بي]]
[[uk:OrientDB]]