Entangled queries
Nitin Gupta, Łucja Kot, Sudip Kumar Roy, Gabriel Bender, Johannes E. Gehrke, Christoph E. Koch · 2011
Many data-driven social and Web applications involve collaboration and coordination. The vision of declarative data-driven coordination (D3C), proposed in [9], is to support coordination in the spirit of data management: to make it data-centric and to specify it using convenient declarative languages. This paper introduces entangled queries, a language that extends SQL by constraints that allow for the coordinated choice of result tuples across queries originating from different users or applications.