Neo4j

aanastasiou · 12-15-2021

Hello I have setup two separate Neo4j servers, both of version 4.4.0. I am using neo4j-admin dump from one to create an archive to then use neo4j-admin load on the other to transfer specific databases between them. The tool fails with "Not a valid ne...

aanastasiou · 03-27-2019

Hello I am trying to understand if the use of a node label as a "tag" has any better performance in querying than using an indexed attribute. Consider for example a typical blogging platform where some Article node might have to be "tagged" as Draft,...

aanastasiou · 11-23-2018

Is it possible to get some sort of overview regarding the way ONLINE indices are created and used in neo4j? I am importing a large number of items (order of magnitude of millions) and I was wondering if in the long term it would be worth triggering t...

aanastasiou · 11-15-2018

I am looking at the point data type and I can see that it uses x,y,z and longitude,latitude,height interchangeably so I was wondering what is the intention behind this. I can see from the documentation that the intention seems to be to discriminate b...

aanastasiou · 10-15-2018

I have a directed Multigraph which is basically a number of directed graphs (of the same type), overlapped. There are quite a few queries in my use case that slice and dice this multigraph looking for shortest paths. In general, this works. But... th...

aanastasiou · 04-01-2019

Thanks @Christophe_Willemsen, I have come across this article and read it but as you say, it was getting a bit "old" by now and I thought it would be better to confirm.

aanastasiou · 03-27-2019

That's great, thank you very much, as far as I am concerned these two responses are very clear on how this would be handled by the DBMS. Regarding your last paragraph, for neomodel, the added complexity is that treating the Label as a tag, breaks the...

aanastasiou · 03-27-2019

Hi Thank you for your reply. The first part of your answer confirms my suspicion and I would not think that a different algorithm is used for indices on labels or properties (at least for strings). For the second part, I do not think that it would be...

aanastasiou · 11-28-2018

Hi Michael Thanks, this is useful, although it won't help too much with the specific problem that motivated this question. What I mean with 2 is, does the index get updated with each write operation or does it wait for N write operations and then sor...

aanastasiou · 11-15-2018

Thank you for your reply. I think that the confusion originally stemmed from simple CREATE node tests which seemed to go ahead without problems but were however wrong on my part. This has been rectified and a first iteration of POINT support has been...

Neo4j

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"Not a valid Neo4j archive"

Performance of Node Labels VS attributes

How are ONLINE indices created?

Clarification on the semantics of POINT

Any plans to make Path and Graph computable?

Re: Performance of Node Labels VS attributes

Re: Performance of Node Labels VS attributes

Re: Performance of Node Labels VS attributes

Re: How are ONLINE indices created?

Re: Clarification on the semantics of POINT