纠缠
发表于 2025-3-23 12:42:17
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
发表于 2025-3-23 14:53:42
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
发表于 2025-3-23 20:25:08
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
发表于 2025-3-23 22:34:05
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
发表于 2025-3-24 03:59:26
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BUDGE
发表于 2025-3-24 08:54:06
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净礼
发表于 2025-3-24 11:09:39
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Calculus
发表于 2025-3-24 17:33:41
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congenial
发表于 2025-3-24 22:42:01
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EWE
发表于 2025-3-24 23:38:30
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