Event-Oriented Data Models and Temporal Queries in Transaction-Time Databases

C. Zaniolo
{"title":"Event-Oriented Data Models and Temporal Queries in Transaction-Time Databases","authors":"C. Zaniolo","doi":"10.1109/TIME.2009.26","DOIUrl":null,"url":null,"abstract":"Past research on temporal databases has primarily focused on state-based representations and on relational query language extensions for such representations. This led to many different proposals that had did not succeed in making a significant impact on SQL-compliant DBMS.More recently however, there has been significant interest and progress on event sequences,leading to vendor-proposed extensions of SQL standards for pattern queries based on Kleene-closure expressions.In this paper, we first outline these extensions and their uses in dealing with sequence of events, and then show that they can also be used effectively to express more traditional temporal queries, such as coalescing and joins, on state-based representations.Thus, we propose an approach that takes full advantage of the fact that every state-based representation also has a dual representation based on its start-event and its end-event.","PeriodicalId":163298,"journal":{"name":"2009 16th International Symposium on Temporal Representation and Reasoning","volume":"165 1","pages":"0"},"PeriodicalIF":0.0000,"publicationDate":"2009-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2009 16th International Symposium on Temporal Representation and Reasoning","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/TIME.2009.26","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 10

Abstract

Past research on temporal databases has primarily focused on state-based representations and on relational query language extensions for such representations. This led to many different proposals that had did not succeed in making a significant impact on SQL-compliant DBMS.More recently however, there has been significant interest and progress on event sequences,leading to vendor-proposed extensions of SQL standards for pattern queries based on Kleene-closure expressions.In this paper, we first outline these extensions and their uses in dealing with sequence of events, and then show that they can also be used effectively to express more traditional temporal queries, such as coalescing and joins, on state-based representations.Thus, we propose an approach that takes full advantage of the fact that every state-based representation also has a dual representation based on its start-event and its end-event.
事务时数据库中面向事件的数据模型和时态查询
过去对时态数据库的研究主要集中在基于状态的表示和这种表示的关系查询语言扩展上。这导致了许多不同的建议,这些建议都没有成功地对sql兼容的DBMS产生重大影响。然而,最近人们对事件序列产生了浓厚的兴趣并取得了重大进展,导致供应商提出了基于kleene闭包表达式的模式查询的SQL标准扩展。在本文中,我们首先概述了这些扩展及其在处理事件序列中的用途,然后表明它们也可以有效地用于表达更传统的时间查询,例如基于状态表示的合并和连接。因此,我们提出了一种充分利用每个基于状态的表示也具有基于其开始事件和结束事件的双重表示这一事实的方法。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信