This product version of Ultrawrap supports W3C's Direct Mapping on Oracle.
This beta version of Ultrawrap is available for evaluation. It supports W3C's Direct Mapping and R2RML, and the following RDBMS: Oracle, IBM DB2, Microsoft SQL Server and PostgreSQL.
|Uses SQL View to define RDF:
The relational data is logically modeled as RDF and need not be extracted and loaded into a triple-store.
|No data replication means
|SPARQL is Executed by the RDBMS:
Ultrawrap does not implement SPARQL to SQL optimizations. A simple translation is used. Thus, optimization is performed by existing, SQL optimizers.
|Most challenging aspect of the implementation are executed by well established codebase with large market.
|Supports W3C Standards and more:
Standard Direct Mapping and R2RML support. Mapping of SQL Schema and meta-data to OWL. GUI-based mapping refinement.
|No need to learn a new mapping language
|Downward Compatible with D2R:
Legacy D2R users may use their existing D2RQ mappings.
|Transparent Migration Path From D2R Server Means
Berlin SPARQL Benchmark results on 100 million triples (~10 GB), demonstrate that execution speed of SPARQL queries on Ultrawrap is comparable to the execution speed of independently written but semantically equivalent SQL queries.
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