Database Backends for Brick¶
In this section, we provide an incomplete list of available commercial and open-source databases which support Brick features.
RDF model storage: does the database support the storage of RDF models (this should be yes for all of the below databases)
SPARQL support: does the database support the execution of SPARQL queries? The relevant standards are:
Reasoning/Inference: does the database support reasoning and inference on stored RDF models? Relevant features are:
what inference is supported: OWL-DL, OWL-RL, RDFS, OWL-Full, SHACL-AF
manual or automatic: is reasoning performed as a manual or batch processing task
SHACL support: does the database support the validation of RDF models using SHACL shapes?
Multiple Graphs: does the database support the storage of multiple graphs, and can those graphs be updated/queried independently?
Scaling and Performance: what are the scaling and performance properties of the database? This includes horizontal scaling capabilities, query performance and storage requirements
If there is a missing database or our documentation is incomplete, please file an issue
HodDB is an open-source, high-performance, research-quality query processor
RDF model storage: HodDB supports the storage of RDF models on a local filesystem, using BadgerDB
SPARQL support: HodDB supports a subset of SPARQL 1.1, including property path queries and UNION (specifically not inserts). See the HodDB papers for a more precise list. HodDB also does not support the SPARQL API protocol, and instead requries use of a specific GRPC-based API
Reasoning/Inference: HodDB supports some basic inference — namely handling OWL inverse and transitive properties.
SHACL support: HodDB does not support SHACL
Multiple Graphs: HodDB supports the storage of multiple graphs which can be queried separately
Scaling and Performance: Due to the restricted query and update model, HodDB provides excellent SPARQL query performance on graphs up to a few hundred thousand nodes. HodDB currently does not support distributed storage
Allegrograph is a proprietary, commercial graph database supporting RDF and related technologies. Allegrograph also provides a free version with limited features
RDF model storage: The paid version of Allegograph supports horizontally scalable storage of RDF models; the base version stores RDF models on a single node
SPARQL support: Allegrograph supports full SPARQL 1.1
SHACL support: Allegrograph supports SHACL validation but does not seem to support SHACL advanced features such as inference
Multiple Graphs: unknown
Scaling and Performance: Allegrograph demonstrates good performance on graphs typical of Brick