'''System R''' is a Database system built as a research project at IBM San Jose Research (now IBM Almaden Research Center) in the 1970s. System R was a seminal project: it was the first implementation of the SQL database query language, which is the standard relational query language. It was also the first system to demonstrate that a Relational_database_management_system could provide good Transaction_processing performance. Design decisions in System R, as well as some fundamental algorithm choices (such as the dynamic algorithm used in Query_optimization), influenced many later relational systems. == External link == * System R website {{FOLDOC}} Category:Database_management_systems Pl:System_R Fi:System_R