Flexible and Efficient Information Handling

doi:10.1007/11788911

Lecture Notes in Computer Science

2006

DOI: 10.1007/11788911

|View full text |Cite

Flexible and Efficient Information Handling

Abstract: We present a scalable distributed database system called SD-SQL Server. Its original feature is dynamic and transparent repartitioning of growing tables, avoiding the cumbersome manual repartitioning that characterize current technology. SD-SQL Server re-partitions a table when an insert overflows existing segments. With the comfort of a single node SQL Server user, the SD-SQL Server user has larger tables or gets a faster response time through the dynamic parallelism. We present the architecture of our system… Show more

Help me understand this report

Search citation statements

Order By: Relevance

Paper Sections

Select...

Citation Types

Supporting

Mentioning

Contrasting

Year Published

2006

2023

Publication Types

Select...

Book5

Relationship

Self Cite0

Independent5

Authors

Journals

Cited by 5 publications

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Delegation of Power in Normative Multiagent Systems

Boella

Torre

2006

Deontic Logic and Artificial Normative Systems

View full text Add to dashboard Cite

In this paper we reconsider the definition of counts-as relations in normative multiagent systems: counts-as relations do not always provide directly an abstract interpretation of brute facts in terms of institutional facts. We argue that in many cases the inference of institutional facts from brute facts is the result of actions of agents acting on behalf of the normative systems and who are in charge of recognizing which institutional facts follow from brute facts. We call this relation delegation of power: it is composed of a counts-as relation specifying that the effect of an action of an agent is an institutional fact and by a goal of the normative system that the fact is considered as an institutional fact. This relation is more complex than institutional empowerment, where an action of an agent counts-as an action of the normative system but no goal is involved, and than delegation of goals, where a goal is delegated to an agent without giving it any power. With two case studies we show the importance of the delegation of power. Finally, we show how the new definition can be related with existing ones by using different levels of abstraction.

show abstract

Delegation of Power in Normative Multiagent Systems

Boella

Torre

2006

Deontic Logic and Artificial Normative Systems

View full text Add to dashboard Cite

show abstract

A Graph Transformation System Model of Dynamic Reorganization in Multi-agent Systems

Wang

Liang

Zhao

2006

Intelligent Data Engineering and Automated Learning – IDEAL 2006

View full text Add to dashboard Cite

Managing Database Trigger Design

Brock

2023

Lecture Notes in Business Information Processing

View full text Add to dashboard Cite

How to systematically check constraints in databases other than the standard constraints, e.g., (primary) keys and foreign keys? To solve this important problem in practice, one can use triggers, i.e., special database procedures that automatically start ('fire') upon attempts to modify data in a table.In practice, designing, writing, and maintaining triggers consistently is subtle, difficult, and error-prone, for many reasons: E.g., when multiple triggers are activated 'at the same time' or different trigger-types are mixed, the behaviour can become quite subtle or unpredictable, e.g., regarding their execution-order. Or when triggers invoke external actions, the triggering transaction might not be committed after all. Moreover, keeping triggers consistent when they must be changed is also very error-prone. So, it is very desirable to be able to (re)generate such triggers in a disciplined way. Therefore, our research question is how to manage the proper execution of checking constraints in database practice.To tackle these problems, we systematically assemble the triggers that should be activated 'at the same time' into one trigger. In that way, we keep control over what happens, and when. It keeps the trigger-order platform-independent as well. Using standard templates, we describe a generic way for generating triggers from a declarative specification. We intensively used and evaluated this approach in practice. Constraints between and within tables can be treated in this way. Using triggers, we also propose a straightforward implementation of SQL's assertions.To develop triggers consistently, several design-decisions must be made. E.g., should the trigger stop checking after detecting the first violation or find and mention all violations? And what to do when there is a violation? E.g., a rollback or some 'repair', e.g., a cascading delete? We discuss and answer all these questions.

show abstract

scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.

Contact Info

customersupport@researchsolutions.com

10624 S. Eastern Ave., Ste. A-614

Henderson, NV 89052, USA

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Blog Terms and Conditions API Terms Privacy Policy Contact Cookie Preferences Do Not Sell or Share My Personal Information

Made with 💙 for researchers

Part of the Research Solutions Family.

Flexible and Efficient Information Handling

Cited by 5 publications

References 5 publications

Delegation of Power in Normative Multiagent Systems

Delegation of Power in Normative Multiagent Systems

A Graph Transformation System Model of Dynamic Reorganization in Multi-agent Systems

Managing Database Trigger Design

Contact Info

Product

Resources

About