MillenniumDB: Property graph and RDF engine, still in development

#1

Post by robsalasco » Fri, Jan 31, 2025, 2:48 PM UTC

MillenniumDB: Property graph and RDF engine, still in development
github.com

Re: MillenniumDB: Property graph and RDF engine, still in development

#2

Post by jitl » Fri, Jan 31, 2025, 3:53 PM UTC

Is it any good?

Re: MillenniumDB: Property graph and RDF engine, still in development

#3

Post by WhatIsDukkha » Fri, Jan 31, 2025, 4:06 PM UTC

Here is a bug with some back and forth between millenniumdb and qlever in starting a benchmarking attempt but I don't see results, though they managed to build and import.

https://github.com/MillenniumDB/MillenniumDB/issues/10

https://github.com/ad-freiburg/qlever

Re: MillenniumDB: Property graph and RDF engine, still in development

#4

Post by UltraSane » Fri, Jan 31, 2025, 4:11 PM UTC

What is a domain graph?

Re: MillenniumDB: Property graph and RDF engine, still in development

#5

Post by [deleted] » Fri, Jan 31, 2025, 4:22 PM UTC

[deleted]

Re: MillenniumDB: Property graph and RDF engine, still in development

#6

Post by [deleted] » Fri, Jan 31, 2025, 4:25 PM UTC

[deleted]

Re: MillenniumDB: Property graph and RDF engine, still in development

#7

Post by leetrout » Fri, Jan 31, 2025, 5:13 PM UTC

UltraSane wrote: post #4

What is a domain graph?

Weird title here. The repo says "Property Graph and RDF engine, still in development" with no mention of domain.

Re: MillenniumDB: Property graph and RDF engine, still in development

#8

Post by dang » Fri, Jan 31, 2025, 5:20 PM UTC

leetrout wrote: post #7

UltraSane wrote: post #4

What is a domain graph?

Weird title here. The repo says "Property Graph and RDF engine, still in development" with no mention of domain.

We've changed the title to that of the page. (Submitted title was "MillenniumDB: A graph database engine using domain graphs")

Re: MillenniumDB: Property graph and RDF engine, still in development

#9

Post by smarx007 » Fri, Jan 31, 2025, 5:26 PM UTC

I think if someone is just trying out RDF, it is better to start with Apache Jena/Fuseki or Eclipse RDF4J. Maybe https://github.com/oxigraph/oxigraph if you like to live dangerously (i.e. to use pre-1.0 DBMSs).

Use of other systems involves factoring tradeoffs and considerations that are probably not the best for the newcomers. For example, qLever mentioned here is good in query performance and relative disk use but once the import is done, it's essentially a read-only DB and completely unsuitable for a typical OLTP scenario.

Having said that, the Chilean research group that is driving the development of MilleniumDB is very well-regarded in the RDF/semantic web querying space.

Re: MillenniumDB: Property graph and RDF engine, still in development

#10

Post by jerven » Fri, Jan 31, 2025, 5:58 PM UTC

MilleniumDB is an interesting engine, as is Qlever mentioned in other comments. I think both are good candidates at making RDF graphs one or two orders of magnitude cheaper to host as sparql endpoints.

Both seem to have arrived at the stage of transitioning from research to production code.

Very exiting for those of us providing our data in RDF and exposing Sparql.

AWs Neptune analytics is also very interesting, allowing Cypher on RDF graphs. Even the Oracle inbuilt RDF+Sparql seems to have improved greatly in 23ai.