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Agens Graph – PostgreSQL Based Graph Database

agensgraph.com

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Re: Agens Graph – PostgreSQL Based Graph Database

#4
I've been following this for a few months.

It looks neat but too new to entrust to any major project in my opinion. Also seems too new to put together and meaningful performance comparison since it still seems they're finding frequent improvements.

I really wished this could have been distributed as an extension rather than a totally separate Postgres package. It is much easier to play with extensions... I read somewhere they can't do it since they have to modify non-extensible bits of code:(

Re: Agens Graph – PostgreSQL Based Graph Database

#5
post #2

Wondering if anyone has experience with it... there's a lot of competition in graph database market, curious to see if this is worth investing time in.

There isn't a lot of competition in the "free/libre database" market though. The only serious players are Jena/Fuseki (an RDF store) and Janus (a graph store).

Re: Agens Graph – PostgreSQL Based Graph Database

#7
post #5
post #2

Wondering if anyone has experience with it... there's a lot of competition in graph database market, curious to see if this is worth investing time in.

There isn't a lot of competition in the "free/libre database" market though. The only serious players are Jena/Fuseki (an RDF store) and Janus (a graph store).

Well some of the competitions regardless of free or commerical are built using either a known NoSQL or a known relational database as the backend.

Re: Agens Graph – PostgreSQL Based Graph Database

#8
post #5
post #2

Wondering if anyone has experience with it... there's a lot of competition in graph database market, curious to see if this is worth investing time in.

There isn't a lot of competition in the "free/libre database" market though. The only serious players are Jena/Fuseki (an RDF store) and Janus (a graph store).

I've been watching https://dgraph.io with great interest. Looks like it could become a very solid contender as a horizontally scalable open source graph database engine.

Re: Agens Graph – PostgreSQL Based Graph Database

#9

This is awesome. So many of the problems in legacy projects that I've had to deal with have been from trying to shoehorn a graph business process into a tree database.

A "graph business process" is borderline content free. All business processes can be expressed by graphs. What is a graph? A dynamic data structure. That is it.

So what is a "tree database"? A graph database with a bias for a specific ordering of its nodes. Does that make a tree database a query result (path traversal) in a graph database? The confusion of it all.

So imho one uses a "graph database" when (a) the domain is open ended, and (b) information is sketchy (precisely: incomplete), and as an important case in an open ended domain (c) we need to express a set of relationship types and ordering.

Semantic systems, for example, fit that description and can be reasonably considered as /fundamentally/ graph based. Some CRUD backend and OLAP on that domain likely does not.

To conclude, the naive impulse to reach for a graph db is likely induced by a recognition for needing something more expressive than a k/v, or doc store with secondary indexes, but fearing the dreaded RDBMS. Thus one "shoehorns" a static, completely captured, and fully described, domain unto a graph database cause E-R ain't sexy and SQL is a mystery. (Heads up: graph path expressions can get hairy too.)

Re: Agens Graph – PostgreSQL Based Graph Database

#10
post #5
post #2

Wondering if anyone has experience with it... there's a lot of competition in graph database market, curious to see if this is worth investing time in.

There isn't a lot of competition in the "free/libre database" market though. The only serious players are Jena/Fuseki (an RDF store) and Janus (a graph store).

It reminded me http://grakn.ai , another quite solid and interesting project right know.
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