Titlebook: Innovationen für eine nachhaltige Wasserwirtschaft; Einflussfaktoren und Harald Tauchmann,Joachim Hafkesbrink,Markus Schrol Book 2006 Physi

纠缠

from some kind of specification of optimizer behavior. These specification frameworks do a good job of partitioning and modularizing the kinds of information needed to generate a query optimizer. Most of them represent at least part of this information in a rule-like form. Nevertheless, large porti

exophthalmos

el ‘explanations’ of a program evaluation/execution can be constructed to provide added functionality: (1) To debug a program by following a chain of deductions leading to an unexpected (and possibly incorrect) conclusion; (2) To follow the derivation of certain . conclusions to determine why and ho

脆弱带来

be used to express both user level queries as well as low-level evaluation strategies or access plans. This property enables rule-based query optimization to be viewed as the process of . expressions in such a language: “non-procedural” sub-expressions are gradually replaced by more “procedural” sub

HERTZ

ed for introducing significant changes in all organizations and their processes. This paper describes the IDEA Web Laboratory (Web Lab), a WEB-based software design environment available on Internet, which demonstrates a novel approach to the software production process on the WEB..The IDEA Methodol

Juvenile

BUDGE

净礼

Calculus

congenial

EWE

ynthesized attributes for attribute grammars, and we believe it is expressive of a wide range of information: logical and physical properties, both desired and delivered, cost estimates, optimization contexts, and control strategies. Finally, we present a mechanism for processing optimizer specifica