Towards practical approximate lineage

Abstract

Traditionally, provenance and lineage mainly referred to query results. We take a more holistic approach. We consider a system in which tuples (records) that are produced by a query may affect other tuple insertions into the DB, as part of a normal workflow. Therefore, we consider both direct lineage (dependence of a query result on database tuples directly used in solving the query) and distant lineage (dependence on older tuples that caused the existence