Stack Overflow
Stack Overflow

Questions tagged [rdfstore]

a database specifically designed for storing RDF data, often to support SPARQL querying.

37 questions
10
votes
2 answers

Usage of MongoDB as a RDFStore for data objects

Is there any tool to query MongoDB using SPARQL ? I store object using an RDF schema (boo Mongo no schema ^^), and now i looking for a tool/server to query the datastore using SPARQL. I started to write a SPARQL parser, but if such as tool exists, i…
Zenithar
  • 240
  • 6
  • 22
5
votes
1 answer

Storage transactions in Redland's Python bindings?

I've currently skimming through the Python-bindings for Redland and haven't found a clean way to do transactions on the storage engine via it. I found some model-transactions within the low-level Redland module: import RDF, Redland storage =…
Horst Gutmann
  • 10,910
  • 2
  • 28
  • 31
4
votes
3 answers

Editing a complex Java object in a Tapestry 5 web application

I am using Tapestry 5.3.6 for a web application and I want the user to edit an instance of a Java class (a "bean", or POJO) using a web form (which immediately suggests the use of beaneditform) - however the Java class to be edited has a fairly…
Murray Jensen
  • 296
  • 2
  • 11
3
votes
2 answers

what's the difference between allegrograph and five column mysql table?

Allegrograph is basically a RDF triple(actually five field) store. Then why can't we create a MySQL table with five columns and store the triples in them. ? What features does AG have over such MySql table ?
nidheeshdas
  • 1,097
  • 1
  • 11
  • 20
3
votes
1 answer

sesame rdfstore named graphs

I am using sesame HTTP api with its in-memory rdf store. I load data/triples in a context/named graph I query using named graph/context I have 2 questions: In the same repository, can a graph node be shared across different named graphs? My use…
gaurav jain
  • 1,267
  • 8
  • 20
  • 36
2
votes
3 answers

Node.js module for RDF store (persistent) and support for SPARQL HTTP Protocol?

I am looking for a Node.js module that will act as persistent RDF storage and also will have support for an SPARQL protocol (endpoint). Actually, I have/will some RDF that I should publish as Linked Data and also to allow access to the RDF data…
Milan
  • 63
  • 4
2
votes
2 answers

JENA: initializing a HSQLDB RDF datastore

I'm trying to initialize a RDF datastore using Jena and HSQLDB. From http://jena.sourceforge.net/DB/hsql-howto.html I wrote the following code: import com.hp.hpl.jena.db.DBConnection; import com.hp.hpl.jena.db.IDBConnection; import…
Pierre
  • 34,472
  • 31
  • 113
  • 192
2
votes
3 answers

Why is RDF considered schemaless?

People consider resource description framework (RDF) as a schemaless data model. However, there is something called RDF Schema (RDFS). So, why is RDF a schemaless data model?
Beautiful Mind
  • 5,828
  • 4
  • 23
  • 42
2
votes
1 answer

Using Sesame 2 and MySQL in my Java Class

It's my first time with Sesame 2 so please be kind. It could be a stupid question but I can't find documentation about how to use Sesame 2 and a mysql store. I've created one using the create mysql. command in the Open-rdf console but now I do not…
dierre
  • 7,140
  • 12
  • 75
  • 120
2
votes
1 answer

Sesame 2.7 failed to recognise RDF Literal

I'm having some trouble with Sesame 2.7. Suppose I have the following RDF document:
Rick
  • 521
  • 5
  • 18
2
votes
3 answers

SPARQL query using a local RDF store

I am trying to create a SPARQL query using a local RDF graph. But its not working. I have included my code below is my code. I have two classes called Student and University. The student class has two attributes (enrolledOn and studiesAt). The…
Harith
  • 21
  • 3
2
votes
2 answers

Open Source Triple store for OWL

I'm new with triple stores and I need a good recommendation for an open source triple store, where I can store OWL files. Does someone have some recommendations for me? Thank you a lot! Bests M
user1788114
  • 37
  • 1
  • 3
2
votes
1 answer

Can I configure Jena Fuseki with inference and TDB?

I want to configure Fuseki with an inference model supported by TDB. I have been able to configure it with a Memory Model, but not with a TDB Model where I could update triples. I am using the following assembler description: @prefix tdb:…
Labra
  • 1,412
  • 1
  • 13
  • 33
1
vote
1 answer

Needing RDF sample dataset

Hi everyone Ive been looking for some time now for a big enough semantic dataset to do some testing on an algorithm Im developing. With this I mean an already existing RDF/XML file that I could "easily" upload to AllegroGraph. I have found several…
keponk
  • 281
  • 1
  • 3
  • 14
1
vote
0 answers

What are the processes involve in RDF management s for real-world data?

Synthetic datasets like LUBM, BSBM, SP2Bench generated datasets have relational structure because of their structured classes. Therefore, they can be easily stored and query in RDF management systems. On the other hand, what are the challenges…
Abir Chokraborty
  • 1,695
  • 4
  • 15
  • 23
1
2 3