Tanin, EgemenBeigel, RichardShneiderman, BenDynamic query interfaces (DQI) are a recently developed database access mechanism that provides continuous real-time feedback to the user during query formulation. Previous work shows that DQI are an elegant and powerful interface to small databases. Unfortunately, when applied to large databases, previous DQI algorithms slow to a crawl. We present a new incremental approach to DQI algorithms that works well with large databases, both in theory and in practice.en-UShuman computer interactionalgorithmsdata structuredatabaseuser interfaceinformation visualizationdirect manipulationdynamic querySystems Integration MethodologyTechnical Report