Towards a design theory for Database triggers

نویسندگان

  • Arno Siebes
  • M. H. van der Voort
  • Martin L. Kersten
چکیده

Advances in the area of active database management systems require the development of a trigger design theory, which guides the user in the deenition oo well-behaving trigger based applications. The development of such a theory requires a formal deenition of trigger semantics. This paper describes a framework for such a formalisation of triggers. That is, the parameters of trigger execution and the options for setting them are identiied and discussed. Furthermore, the development of a trigger design theory is initiated with the formulation of a suucient condition for trigger independence.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Invariance , Maintenance and other declarativeobjectives of triggers { a formal characterizationof active databasesMutsumi

In this paper we take steps towards a systematic design of active features in an active database. We propose having declarative speciications that specify the objective of an active database and formulate the cor-rectness of triggers with respect to such speciications. In the process we distinguish between the notions ofìnvariance' and`maintenance' and propose four diierent classes of speciicat...

متن کامل

Building Digital Infrastructures: Towards an Evolutionary Theory of Contextual Triggers

Past IS research suggests it is challenging to build digital infrastructures and then make sure they grow. While more users, innovative services, and new partners spur infrastructure evolution, we know little of the specific contextual triggers that set these generative mechanisms in motion. To this end, we conduct a case study of a digitalized public transport infrastructure to identify such t...

متن کامل

Practical Step towards Sampling in Qualitative Research; Focused on Grounded Theory

Today, there is a growing trend towards qualitative research in different areas of academic investigations. However, students face difficulties in deciding on qualitative methods of research, because most of the literature on qualitative research focuses on the philosophical and theoretical aspects, and they hardly offer any practical guidelines. This problem is rooted in the essence of qualita...

متن کامل

A New Approach for Knowledge Based Systems Reduction using Rough Sets Theory (RESEARCH NOTE)

Problem of knowledge analysis for decision support system is the most difficult task of information systems. This paper presents a new approach based on notions of mathematical theory of Rough Sets to solve this problem. Using these concepts a systematic approach has been developed to reduce the size of decision database and extract reduced rules set from vague and uncertain data. The method ha...

متن کامل

Specifying Reactive Integrity Control for Active Databases

Recent approaches to integrity enforcement in active databases suggest not only to check constraint violations by triggers but also to utilize triggers to perform inconsistency repair actions. However, for sophisticated reactions these approaches often require refinements of already derived integrity maintaining and inconsistency repairing triggers. We argue that analyzing and specifying reacti...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 1992