Sones GraphDB was a

graph database A graph database (GDB) is a database that uses graph structures for semantic queries with nodes, edges, and properties to represent and store data. A key concept of the system is the ''graph'' (or ''edge'' or ''relationship''). The graph relat ...

developed by the German company sones GmbH, available from 2010 to 2012. Its last version was released in May 2011. sones GmbH, which was based in

Erfurt Erfurt () is the capital and largest city in the Central German state of Thuringia. It is located in the wide valley of the Gera river (progression: ), in the southern part of the Thuringian Basin, north of the Thuringian Forest. It sits i ...

and

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, was declared bankrupt on January 1, 2012. GraphDB was unique in that its design based on weighted graphs. The open source edition was released in July 2010. The commercially available enterprise version offered a wider variety of functions. GraphDB was developed in the programming language C# and ran on

Microsoft Microsoft Corporation is an American multinational technology corporation producing computer software, consumer electronics, personal computers, and related services headquartered at the Microsoft Redmond campus located in Redmond, Washing ...

.NET Framework The .NET Framework (pronounced as "''dot net"'') is a proprietary software framework developed by Microsoft that runs primarily on Microsoft Windows. It was the predominant implementation of the Common Language Infrastructure (CLI) until bein ...

and on the open source reimplementation

Mono Mono may refer to: Common meanings * Infectious mononucleosis, "the kissing disease" * Monaural, monophonic sound reproduction, often shortened to mono * Mono-, a numerical prefix representing anything single Music Performers * Mono (Japanese b ...

. GraphDB was available as

software as a service Software as a service (SaaS ) is a software licensing and delivery model in which software is licensed on a subscription basis and is centrally hosted. SaaS is also known as "on-demand software" and Web-based/Web-hosted software. SaaS is con ...

(SaaS) on the

cloud

Azure Services Platform Microsoft Azure, often referred to as Azure ( , ), is a cloud computing platform operated by Microsoft for application management via around the world-distributed data centers. Microsoft Azure has multiple capabilities such as software as a s ...

. GraphDB was also a component of an open source

solution stack In computing, a solution stack or software stack is a set of software subsystems or components needed to create a complete Computing platform, platform such that no additional software is needed to support applications. Applications are said to " ...

. In 2014 the trademark "GraphDB" was acquired by

Ontotext Ontotext is a software company with offices in Europe and USA. It is the semantic technology branch of Sirma Group. Its main domain of activity is the development of software based on the Semantic Web languages and standards, in particular RDF, ...

. OWLIM, Ontotext's

and RDF

triplestore A triplestore or RDF store is a purpose-built database for the storage and retrieval of triples through semantic queries. A triple is a data entity composed of subject–predicate–object, like "Bob is 35" or "Bob knows Fred". Much like a relati ...

, was renamed GraphDB.Ontotext Improves Its RDF Triplestore, GraphDB 6.0
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Functionality

GraphDB had index-free adjacency, which meant that it not necessary to manage a global index for relationships between nodes/entities. The linked objects contained direct reference to their adjacent neighboring nodes. The sones graph database was able to store and retrieve unstructured properties in any node of the graph. The idea was also to transfer unstructured data to structured data and vice versa. Structured data could be dynamically extended with high performance in nodes and edges during runtime. Additional properties could easily be entered or deleted from vertex types in a short amount of time. GraphDB used its own query language, GraphQL, which was similar to SQL. It could be dynamically extended during runtime using plugins such as functions or aggregates. GraphDB used an object-oriented concept, which enabled better integration into

object-oriented programming Object-oriented programming (OOP) is a programming paradigm based on the concept of "objects", which can contain data and code. The data is in the form of fields (often known as attributes or ''properties''), and the code is in the form of pr ...

languages.

Interfaces

REST API

In addition to providing a number of interfaces (e.g.,

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, C#, WebShell,

WebDAV WebDAV (Web Distributed Authoring and Versioning) is a set of extensions to the Hypertext Transfer Protocol (HTTP), which allows user agents to collaboratively author contents ''directly'' in an HTTP web server by providing facilities for concu ...

) the sones graph database also offers a REST API. This enables simpler interaction with state-of-the-art web technologies. A REST-query is all that is needed to execute CRUD operations directly on the database.

Traverser API

The Traverser API makes it possible to analyze local data. Based on a number of nodes (local), neighboring nodes can be searched recursively (breadth-depth first).

Architecture

GraphDB has a modular structure consisting of 4 application layers. The storage engines act as the interface to different storage media. The GraphFS serializes and deserializes database objects (nodes and edges) and operates the available storage engines. The actual graph-oriented database logic as well as all functionalities specific to the database are implemented in the GraphDB. The GraphDS provides the interface for using the database. The interfaces between the application layers are generic, which makes it possible to update components separately.

References

External links

Download of community edition 2.1

German Interview with Alexander Oelling on RadioTUX

Presentation on the GraphDB at the 2010 NoSQL conference in Frankfurt

Sones at TechCrunch
{{DEFAULTSORT:Sones Graphdb Graph databases Proprietary database management systems Free database management systems 2010s software Software using the GNU AGPL license Discontinued software