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OrientDB

What is OrientDB?

OrientDB is an Open Source Multi-Model NoSQL DBMS with the support of Native Graphs, Documents, Full-Text search, Reactivity, Geo-Spatial and Object Oriented concepts. It's written in Java and it's amazingly fast. No expensive run-time JOINs, connections are managed as persistent pointers between records. You can traverse thousands of records in no time. Supports schema-less, schema-full and schema-mixed modes. Has a strong security profiling system based on user, roles and predicate security and supports SQL amongst the query languages. Thanks to the SQL layer it's straightforward to use for people skilled in the Relational world.

Get started with OrientDB | OrientDB Community Group.

Is OrientDB a Relational DBMS?

No. OrientDB adheres to the NoSQL movement even though it supports ACID Transactions and SQL as query language. In this way it's easy to start using it without having to learn too much new stuff.

Scalability: the database is the bottleneck of most applications

The most common reason applications scale out badly is, very often, the database. The database is the bottleneck of most applications. OrientDB scales out very well on multiple machines. The database can be up to 302,231,454,903,657 billion (2^78) records for the maximum capacity of 19,807,040,628,566,084 Terabytes of data on a single server or multiple nodes.

I can't believe it! Why is it so fast?

OrientDB has been designed to be very fast. It inherits the best features and concepts from Object Databases, Graph DBMS and modern NoSQL engines. OrientDB manages relationships without the run-time costly join operation, but rather with direct pointers (links) between records. No matters if you have 1 or 1,000 Billion of records, the traversing cost remains constant. Download the Benchmark PDF XGDBench: A Benchmarking Platform for Graph Stores in Exascale Clouds by Tokyo Institute of Technology and IBM Research.

Easy to install and use

Yes. OrientDB is totally written in Java and can run on any platform without configuration and installation. The full Server distribution is a few MBs without the demo database. Do you develop with a language different than Java? No problem, look at the Programming Language Binding.

Main References

• Documentation
• For any questions visit the OrientDB Community Group

Get started with OrientDB.

Licensing

OrientDB is licensed by OrientDB LTD under the Apache 2 license. OrientDB relies on the following 3rd party libraries, which are compatible with the Apache license:

• Javamail: CDDL license (http://www.oracle.com/technetwork/java/faq-135477.html)
• java persistence 2.0: CDDL license
• JNA: Apache 2 (https://github.com/twall/jna/blob/master/LICENSE)
• Hibernate JPA 2.0 API: Eclipse Distribution License 1.0
• ASM: OW2

References:

• Apache 2 license (Apache2):http://www.apache.org/licenses/LICENSE-2.0.html

• Common Development and Distribution License (CDDL-1.0):http://opensource.org/licenses/CDDL-1.0

• Eclipse Distribution License (EDL-1.0):http://www.eclipse.org/org/documents/edl-v10.php (http://www.eclipse.org/org/documents/edl-v10.php)

Sponsors

	YourKit supports open source projects with its full-featured Java Profiler. YourKit, LLC is the creator of YourKit Java Profiler and YourKit .NET Profiler, innovative and intelligent tools for profiling Java and .NET applications.

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