computer science

Sones GraphDB

Sones GraphDB is a computer science topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Sones GraphDB rather than just read about it. In short: Sones GraphDB was a graph database 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 and Leipzig, was declared bankrupt on January 1, 2012.

Key takeaways

Sones GraphDB belongs to computer science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Sones GraphDB to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Sones GraphDB from memory before moving on to harder problems.

Reference excerpt

Sones GraphDB was a graph database 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 and Leipzig, 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's .NET Framework and on the open source reimplementation Mono. GraphDB was available as software as a service (SaaS) on the Microsoft cloud Azure Services Platform. GraphDB was also a component of an open source solution stack. In 2014 the trademark "GraphDB" was acquired by Ontotext. OWLIM, Ontotext's graph database and RDF triplestore, was renamed GraphDB.

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 languages.

Interfaces

REST API In addition to providing a number of interfaces (e.g., Java, C#, WebShell, WebDAV) 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.

Worked examples

Example 1 — a first encounter with Sones GraphDB

Start with the simplest possible case. Write down what Sones GraphDB claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In computer science, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Sones GraphDB before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Sones GraphDB ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Sones GraphDB

In research: Sones GraphDB appears in computer science research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Sones GraphDB in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Sones GraphDB is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2010s software, Discontinued software, Free database management systems, so understanding it makes those chapters shorter.
In everyday life: Look for Sones GraphDB outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

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How to study Sones GraphDB in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Sones GraphDB means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Sones GraphDB out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Sones GraphDB in simple terms?

Why does Sones GraphDB matter?

Because it connects several computer science ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Sones GraphDB?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Sones GraphDB.