A database system providing a methodology, implemented as an "Abstract Plan on Disc" technology (referred to herein as, "Ariadne"), is described for turning cost based optimization decisions into stored, reusable items. In particular, the present invention provides a novel language interface to the optimizer,...http://www.google.de/patents/US6618719?utm_source=gb-gplus-sharePatent US6618719 - Database system with methodology for reusing cost-based optimization decisions