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In this demo, we present PACKAGEBUILDER, a system that extends database systems to support package queries. A package is a collection of tuples that individually satisfy base constraints and collectively satisfy global constraints. The need for package support arises in a variety of scenarios: For example, in the creation of meal plans, users are not only interested in the nutritional content of individual meals (base constraints), but also care to specify daily consumption limits and controldoi:10.14778/2733004.2733038 fatcat:dszl5bukanaklbybch2xwreixa