找回密码
 To register

QQ登录

只需一步,快速开始

扫一扫,访问微社区

Titlebook: Mathematical Foundations of Computer Science 1980; 9th Symposium Held i P. Dembiński Conference proceedings 1980 Springer-Verlag Berlin Hei

[复制链接]
楼主: 驱逐
发表于 2025-3-28 18:07:02 | 显示全部楼层
Conceptual relations between databases transformed under join and projection,queries and of allowing equal (or corresponding) updates. After discussing some basic properties of the concepts introduced, the case in which conceptual relations (inclusion or equivalence) among data bases may be proved by means of transformations based on projections and joins is examined in deta
发表于 2025-3-28 20:13:19 | 显示全部楼层
发表于 2025-3-29 00:27:08 | 显示全部楼层
发表于 2025-3-29 06:35:38 | 显示全部楼层
发表于 2025-3-29 08:31:19 | 显示全部楼层
发表于 2025-3-29 12:10:21 | 显示全部楼层
On and/or schemes,cision trees and combinational networks, are naturally embedded in the and/or language. These observations pose some interesting questions for further research. As a first result in the metatheory of and/or schemes, we prove a normal form theorem showing that with the addition of “auxiliary variable
发表于 2025-3-29 17:42:44 | 显示全部楼层
tem specimens, and the validation of changes in animal models of schizophrenia. Recently, several risk genes for schizophrenia have been identified, providing specific targets for the development of diagnostic tests and therapeutic interventions..In this chapter, we review basic concepts of the clin
发表于 2025-3-29 23:42:03 | 显示全部楼层
Dines Bjørnerslähmung durch Diabetes oder chronischen Alkoholabusus. Deutlich zugenommen haben in den letzten Jahren die . einzelner peripherer Nerven, wie Abb. 86 (aus .) zeigt. Mit welcher Häufigkeit die Nerven betroffen sind, ist aus Abb. 87 (.) zu erkennen. Diese Zunahme steht in Zusammenhang mit der heute a
发表于 2025-3-30 02:23:09 | 显示全部楼层
发表于 2025-3-30 05:29:41 | 显示全部楼层
 关于派博传思  派博传思旗下网站  友情链接
派博传思介绍 公司地理位置 论文服务流程 影响因子官网 SITEMAP 大讲堂 北京大学 Oxford Uni. Harvard Uni.
发展历史沿革 期刊点评 投稿经验总结 SCIENCEGARD IMPACTFACTOR 派博系数 清华大学 Yale Uni. Stanford Uni.
|Archiver|手机版|小黑屋| 派博传思国际 ( 京公网安备110108008328) GMT+8, 2025-5-23 09:45
Copyright © 2001-2015 派博传思   京公网安备110108008328 版权所有 All rights reserved
快速回复 返回顶部 返回列表