SWI-Prolog -- rdf

Documentation
- Reference manual
- Packages
  - SWI-Prolog Semantic Web Library 3.0
    - Two RDF APIs
      - library(semweb/rdf_db): The RDF database
        
        Update view, transactions and snapshots
        
        rdf_transaction/1
        
        rdf_transaction/2
        
        rdf_transaction/3
        
        rdf_snapshot/1
        
        rdf_delete_snapshot/1
        
        rdf_active_transaction/1
        
        rdf_current_snapshot/1

Availability::- use_module(library(semweb/rdf_db)).

[det]rdf_snapshot(-Snapshot)

Take a snapshot of the current state of the RDF store. Later, goals may be executed in the context of the database at this moment using rdf_transaction/3 with the snapshot option. A snapshot created outside a transaction exists until it is deleted. Snapshots taken inside a transaction can only be used inside this transaction.