Supporting ODP - Translating LOTOS to Z

Derrick, John; Boiten, Eerke Albert; Bowman, Howard; Steen, Maarten

doi:10.1007/978-0-387-35082-0_29

Cited by 24 publications

(23 citation statements)

References 8 publications

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“…The requirements modeled in each of these viewpoints should be reflected in the overall description of the system. Approaches to ensure or check existence of such a description are proposed by [9,10] and [12]. They aim at checking and ensuring existence of an overall system description capturing each viewpoint.…”

Section: Related Workmentioning

confidence: 99%

MaDe4IC: an abstract method for managing model dependencies in inter-organizational cooperations

Bodenstaff

Wombacher

Reichert

et al. 2010

SOCA

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Inter-organizational cooperations are complex in terms of coordination, agreements, and value creation for involved partners. When managing complex cooperations, it is vital to maintain models describing them. Changing one model to regain consistency with the running system might result in new inconsistencies. As a consequence, this maintenance phase grows in complexity with increasing number of models. In this context, challenges are to ensure consistency at design time and to monitor the system at runtime, i.e., at design time, consistency between different models describing the cooperation needs to be ensured. At runtime, behavior of the software system needs to be compared with its underlying models. In this paper, we propose a structured and model-independent method that supports ensuring and maintaining consistency between running system and underlying models for inter-organizational cooperations.

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Section: Related Workmentioning

confidence: 99%

MaDe4IC: an abstract method for managing model dependencies in inter-organizational cooperations

Bodenstaff

Wombacher

Reichert

et al. 2010

SOCA

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“…They can arise either due to the natural non-determinism of a distributed system 11], or due to communication within the system 15] or due to some aspect of the system being hidden at this level of abstraction 2]. The necessity for the speci cation of internal events in process algebras is well recognised 15], and a number of researchers have found it convenient or necessary to specify internal operations in Z when specifying distributed systems 7,16,19,21,9]. In each case the internal operation is speci ed as normal and either has a distinguished name or informal commentary telling us that it is not part of the user interface.…”

Section: Internal Operationsmentioning

confidence: 99%

Weak refinement in Z

Derrick

Boiten

Bowman

et al. 1997

Lecture Notes in Computer Science

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Abstract. An important aspect in the speci cation of distributed systems is the role of the internal (or unobservable) operation. Such operations are not part of the user interface (i.e. the user cannot invoke them), however, they are essential to our understanding and correct modelling of the system. Various conventions have been employed to model internal operations when specifying distributed systems in Z. If internal operations are distinguished in the speci cation notation, then re nement needs to deal with internal operations in appropriate ways. However, in the presence of internal operations, standard Z re nement leads to undesirable implementations. In this paper we present a generalization of Z re nement, called weak re nement, which treats internal operations di erently from observable operations when re ning a system. We illustrate some of the properties of weak re nement through a speci cation of a telecommunications protocol.

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“…Lapsing into Z, the global operation could be de ned by (where Local is the local state, and Promote is a special promotion schema) 9 Local Promote^LocalOperation Global operations could even be de ned in terms of multiple (possibly di erent) local operations on di erent instances of the local state, i.e. they may change the state of several local components at once.…”

Section: Promotionmentioning

confidence: 99%