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List of subject-predicate-object databases : ウィキペディア英語版 | List of subject-predicate-object databases (詳細はtriplestores'') have been built as database engines from scratch, while others have been built on top of existing commercial relational database engines (e.g., SQL-based).〔 Storage and Management of Semi-structured Data (Use of SQL relational databases as an RDF triple store), 2003〕 Like the early development of online analytical processing (OLAP) databases, this intermediate approach allowed large and powerful database engines to be constructed for little programming effort in the initial phases of triplestore development. Long-term though it seems likely that native triplestores will have the advantage for performance. A difficulty with implementing triplestores over SQL is that although ''triples'' may thus be ''stored'', implementing efficient querying of a graph-based RDF model (e.g., mapping from SPARQL) onto SQL queries is difficult. == Implementations ==
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「List of subject-predicate-object databases」の詳細全文を読む
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