fact: Definition UnIndexedRawTupleIn {heading} (rel : @IndexedEnsemble (@RawTuple heading)) (tup : @RawTuple heading):= exists n, rel {| elementIndex := n; indexedElement := tup |}.
imports: Coq.Lists.List Coq.Strings.String Coq.Logic.FunctionalExtensionality Coq.Sets.Ensembles Fiat.Common.StringBound Fiat.Common.Ensembles.IndexedEnsembles Fiat.QueryStructure.Specification.Representation.Schema Fiat.QueryStructure.Specification.Representation.Heading Fiat.QueryStructure.Specification.Representation.Tuple