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SPARQL which is the standard query language for RDF is based on Prolog. So why go back to Prolog?

• ragebol 12y ago
  Prolog is a full programming language, SPARQL is only a query language.
• kendallgclark 12y ago
  SPARQL is similar to non-recursive Datalogˆnot, but that's a subset of full Prolog. SPARQL is a query language, not a full-on programming language as Prolog is.
  • samuell 12y ago
    True. Most notably I badly miss the ability to encapsulate queries in named "functions". That is one of the things I really like in prolog, since it enables to quickly raise one's level of abstraction, by building up a "language" of facts and rules. If anyone knows a way to do something similar in SPARQL, I'm highly interested to know.
    • kendallgclark 12y ago
      You can do this with user-defined rules in some RDF databases. Stardog(.com) supports it nicely.
      • samuell 12y ago
        Interesting, thanks for the hint!