Here is a slideshare and recording of my talk about multi-model databases, presented in Santa Clara earlier this month.

Abstract: Recently a new breed of “multi-model” databases has emerged. They are a document store, a graph database and a key/value store combined in one program. Therefore they are able to cover a lot of use cases which otherwise would need multiple different database systems. This approach promises a boost to the idea of “polyglot persistence“, which has become very popular in recent years although it creates some friction in the form of data conversion and synchronisation..

FOSDEM is an absolutely open and free conference in Brussels, Belgium. The conference offers an impressive amount of developer rooms discussing a broad range of technical topics, including NoSQL and graphs.

After a funny and productive ArangoDB hackathon weekend Frank and I arrived at FOSDEM on Sunday noon. We were looking forward to the talks in the graph devroom, but unfortunately for us it was not possible to enter the room (it was overfull, indicating a great quality of talks).At the next speakers change Frank and I managed to slip into the room and could enjoy two inspiring talks by..

Last week Jan (core member of ArangoDB and the brain behind AQL and many other parts) was invited by “mobile.cologne” – a user group here in Cologne dealing with mobile development.

In this talk Jan gives a general overview on nosql databases and the different flavors. He explains how to query a nosql database and he evaluates how a nosql database can be used in a mobile app.

Jan was invited as a speaker to “Js.Everywhere” in Paris. He talked about using Javascript in a database, well, ArangoDB, to be precise, giving lots of examples on “actions” and related concepts in ArangoDB.

@moonbeamlabs and I hold a workshop about ArangoDB and the Ruby driver Ashikawa, which will hopefully become one of the first DataMapper 2 NoSQL drivers. Currently, we are using the aequitas and virtus components of DataMapper 2.

Slides of the workshop can be found on slideshare:

• Introduction to ArangoDB
• Introduction to Ashikawa

We just came back from FroSCon, a large, international open source conference near Bonn, Germany. Jan Steemann, one of the core developers of ArangoDB, had a talk on modelling data in a schema-free world. Jan was given the largest room in the conference for this talk, fortunately a lot of people showed up and even stayed ;-).

You can find Jan’s presentation below.