Thanks to everyone for attending the webinar, I was thrilled about the attendance and the great discussions in the chat.
As promised we publish this follow-up post to address questions that were not answered and provide a convenient place to check out the resources mentioned in the webinar.
Oleg Okun: How easily can one migrate from a graph database to a non-graph NoSQL database?
Export your data using any of the API's (Java, REST, Cypher) and import it on the other side.
Alexandre Meynaud: Should we be concerned about performance when defining cypher patterns?
There are some concerns, cypher performance is addressed in Neo4j 1.9, right now try to focus on simple pattern with just one or two bound nodes and non-optional relationships. You might employ patterns as experessions instead of optional relationships
Oleg Okun: Can you point to Cypher implementation of some machine learning/data mining algorithms?
I don't know of any, might be an interesting topic to contribute to. There are some data modeling examples in the Neo4j Manual.
Martin: Will future versions of Cypher be backwards compatible?
Older Cypher parser versions are supported for up to two major Neo4j versions, oder parsers might be activated by prepending a
CYPHER 1.7 like prefix to your query.
Alexandre Meynaud: Do you foresee a "standard" graph query language in the coming years (or decades)?
Not really, for us we focus on allowing our community users and customers to solve their problems. We've had discussions with other vendors about it, but it seems premature to agree on a standard while we are all so busy and focused on product development.
Ajinkya: Can you discuss the reasons that went into the decision to implement cypher using Scala ?
This is a longer discussion, which I covered in a talk given at Geekout Tallinn, see the resources section below.
- Cypher Cheat Sheet
- Cypher Part of the Manual Data Modeling examples both with live query consoles
- Neo4j Console - Sandbox, Gist & Repl
- Gist: How to use Cypher from other programming languages
- Neo4j Cypher JDBC Driver
- Conference Session Dataset from NOSQL-NOW
- Class-Graph: Using Neo4j to analyze software quality
- Example datasets to unzip in your server
- Cypher internals presentationVideo
Great Webinar Chat!
Hassan: Washington DC here Chris Skardon: evening from Cornwall, UK Matt Taylor: hello from Chicago ASHISH M: wow! looks like we have an internnational crowd on today!! Anyone from Australia? MilanSK: eveninig from Humenne, Slovakia Harald: Frankfurt, Germany Martin: Hi from Spain (and Gibraltar) ... Alexandre Meynaud: Yes, the great thing about Cypher is that you express *what* you want to retreive from the graph, and not how Aki Ristkari: It's easy to visualize and you don't have to explain any table-row-kill_me_now-hibernate stuff to people. That marketing term 'Whiteboard friendly' is actually very accurate Andreas Kollegger: @Hisao you can't do sub-queries, but you can "chain" queries using a "WITH" clause to sort-of pipe the results to another query instead of returning them Amit: is there a way to indicate in cypher to prune conditionally like we can using the traverser API Hisao Motoyama: ok, thanks Andreas Kollegger: @Ivan the query performance is not affected by the database size, though it is affected by an increase in "local" data Alex Guerrieri: I love how intuitive it is ... IvanTraveso: nice presentation. thanks! Alexandre Meynaud: Great presentation Michael, thanks a lot Wes: Thanks a lot guys. Andreas Kollegger: thanks everyone, thanks Michael! James Camfield: cheers Chris Skardon: Thanks! Mylène: Thanks. this was absolutely cool! Aki Ristkari: Thanks for the show
How to use Cypher from other programming languagesThis topic is so broad, we will address it in a separate blog, for now here is the link to the gist.
- Thanks for watching, and see you next time