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1
Content available remote A Non-Deterministic Multiset Query Language
Zieliński Bartosz
Fundamenta Informaticae
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2021
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Vol. 184, nr 2
141--180
EN
We develop a multiset query and update language executable in a term rewriting system. Its most remarkable feature, besides non-standard approach to quantification and introduction of fresh values, is non-determinism — a query result is not uniquely determined by the database. We argue that this feature is very useful, e.g., in modelling user choices during simulation or reachability analysis of a data-centric business process — the intended application of our work. Query evaluation is implemented by converting the query into a terminating term rewriting system and normalizing the initial term which encapsulates the current database. A normal form encapsulates a query result. We prove that our language can express any relational algebra query. Finally, we present a simple business process specification framework (and an example specification). Both syntax and semantics of our query language is implemented in Maude
2
Content available Hierarchical EPC models – review of model linking concepts
Szczęśniak Bartosz
Multidisciplinary Aspects of Production Engineering
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2019
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Vol. 2, Iss. 1
476--486
EN
EPC models are currently among the leading standard business process modelling solutions. As long as the rules for creating flat EPC models are explicit and raise no significant doubts, when it comes to linking models of different types, the literature of the subject delivers diversified solutions. Four such alternative concepts that can be applied in this respect have been identified and described in this article. They have been used to link EPC models for four cases proposed. These cases differ as to the degree of complexity, and they represent different kinds of potential links between processes being modelled. Using the concepts in question with reference to the cases defined has made it possible to identify situations in which it is impossible to link models, or when it raises certain doubts. What has also been proposed is that one of the concepts identified in the paper can be modified in such a manner that using it to link EPC models does not pose any problem in any of the cases discussed.
3
Content available remote A Query Language Based on Term Matching and Rewriting
Zieliński Bartosz
Fundamenta Informaticae
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2019
|
Vol. 169, nr 3
237--274
EN
Recent years have seen the emergence of a data-centric approach to business process modelling as an attractive alternative to the dominant task-centric one. This new paradigm requires new tools for effective specification, simulation and validation of data-centric models. In particular, such tools must include support for expressive query and database update languages. Rewriting logic was proposed (and successfully used) as a generic framework for the specification of dynamic systems. However, though relational and other data models can be easily simulated, rewriting systems lack the direct support for first-order queries. In this paper we describe a novel condition and query language (at least as expressive as relational algebra), implemented in the term rewriting language Maude, together with a simple framework for relational transition system specification and simulation. The language is designed to be easy to implement on the top of a conditional rewriting system. Its most interesting feature is that it avoids all problems with variable binding. It works with models founded both on sets and multisets, and the language has linear-like facilities to refer to multiplicities of facts (in the case of multiset-founded models). As an example of the use of our language and simulation framework we reproduce some specifications of business processes from the literature. We also compare several methods for choosing the next action and its input during simulation.
4
Content available Process analysis of implementing structured electronic invoice at the Poznań city hall as an example of process electronisation at public administration units
Dobrzeniecka E.
Information Systems in Management
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2018
|
Vol. 7, No. 1
15--25
EN
Provisions of Directive 2014/55/EU of the European Parliament and of the Council of 16 April 2014 on electronic invoicing in public procurement provide for an obligation for public procurement sector units to be able to receive structured electronic invoices. The article presents assumptions and results of studies carried out at the Poznań City Hall which consisted in a comparative process analysis of the current state (AS IS) of receiving traditional paper invoices and the postulated process (TO BE) of receiving structured electronic invoices.
5
Content available The model of status definition process in the basic data management system – a case study
Jurga A., Czerkawski D.
Research in Logistics & Production
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2017
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Vol. 7, No. 3
259--268
EN
Logistics processes in manufacturing companies are focused on issues related to sales and distribution, as well as with production planning, materials management and supply. The process of production planning is one of the most important in the entire logistics chain. Launching a new product is preceded by a number of sub-processes. In the case of the company presented in the article, the process to start with is the status definition process. The paper presents a model of the status definition process for a new product in basic data management system -SAP. To design the status definition process presented in the paper a dedicated IT tool (ARIS Platform) was implemented.
6
Content available Using scorecard perspectives to assess the benefits of system implementation: a case study analysis
Szabelska A., Gabryelczyk R.
Information Systems in Management
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2016
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Vol. 5, No. 4
573--584
EN
The paper presents the results of case study analysis conducted to assess the benefits of system implementation. The research was carried out in Polish recruitment company. We assessed the benefits of recruitment system implementation using the perspectives of a Balanced Scorecard and, in particular, the modelling and measurement of the main processes of recruitment. We designed indicators of the organization’s performance and we measured them before system implementation (as-is state) and after possible implementation (can-be state). This procedure allowed us to determine changes which the recruitment system could make, and also permitted to take a final decision on whether to invest or discontinue planning implementation.
7
Content available Best practices in business process modelling
Pietroń R.
Information Systems in Management
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2016
|
Vol. 5, No. 4
551--562
EN
The paper explores and analyses approaches and opinions about best practices and recommendations in business process modelling. In the process modelling literature, also as a part of any business modelling activity methodologies, there are no explicit texts about best practices. Additionally, business process modelling is a part of different (approximately 30) business and enterprise modelling architectures, references and frameworks. The paper addresses the following questions: What is the best way to undertake business process modelling? What procedures and core activities are essential during stages of modelling? What are the most important rules, practices and standards to guide the business process modelling community?
8
Content available The diagnosis of information potential of selected business process modelling notations
Gabryelczyk R., Jurczuk A.
Information Systems in Management
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2015
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Vol. 4, No. 1
26--38
EN
The paper presents the findings of the ease of understanding tests for selected business process modelling notations as an element of diagnosing the notations information potential. The easiest-to-understand notation is identified, as well as the attributes determining the choice of this notation as the easiest to understand. Three notations used in business process modelling have been subjected to diagnosis: EPC, BPMS and BPMN. Based on the results of these analyses, recommendations have been formulated for organisations where process modelling requires the involvement of all employees and where process awareness needs to be developed. Using an intuitive notation may contribute to improved communication between users representing different professional profiles and translate into a higher effectiveness of organisational changes.
9
Content available Limitations in detailing of EPC models
Szczęśniak B.
Zeszyty Naukowe / Akademia Morska w Szczecinie
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2014
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nr 39 (111)
151--155
EN
EPC models provide a subject widely discussed in the literature. The principles applicable, while creating them have been elaborated upon in numerous publications. An analysis of the existing principles indicates certain inconsistencies as far as the creation of hierarchical models is concerned. The problem of combining equivalent EPC models using process interfaces has been discussed in the author’s previous publication. This paper continues to elaborate upon the problems previously raised, pertaining to EPC model linking by means of hierarchical functions. It addresses principles significant from the perspective of creating and linking such models using the aforementioned approach. Specific questionable situations have been described and individual solutions proposed to enable avoiding them.
10
Content available Linking EPC models – an alternative approach
Szczęśniak B.
Zeszyty Naukowe / Akademia Morska w Szczecinie
|
2013
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nr 34 (106)
79--84
EN
Even though the literature is abundant in numerous studies concerning syntactic and semantic principles of the EPC model development, one may still have certain doubts when linking such models with one another. This article primarily addresses the principles of creating EPC models, particularly those relevant from the perspective of linking them, identified based on the literature research. What follows the said analysis is a proposal of an alternative concept which may be adopted in this respect. The author has discussed the cases in which models must be subject to specific modifications in order for the linking solution proposed to be applicable.
11
Content available Model and implementation of inteligent information system of e-Bureau
Tchórzewski J., Szoplik P.
Information Systems in Management
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2013
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Vol. 2, No. 4
313--322
EN
The paper presents selected results of model and implementation research concerning the design of a management information system (MIS) to support the functioning of office administration offering sale of services. The application was tested with view to implementation in the Association for Promotion and Scientific Innovations Implementation (AP&SII or Association). The following issues were discussed: methods of organization management modelling, suitable software, available tools supporting modelling, methods of implementation of models in organization systems, etc. E-Bureau information system is an application developed using Eclipse platform with the following plug-ins installed, namely Data Base Development Tools and PHP Development Tools. The system is based on libraries, i.a. Zend, BootStrap, JQuery. The following programming tools were used: CSS, JavaScript, HTML, PHP.
12
Proces sprzedaży towarów i usług w kontekście komputerowo wspomaganego zarządzania małym i średnim przedsiębiorstwem
Saniuk S., Witkowski K.
Logistyka
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2012
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nr 2
PL
W artykule przedstawiono wybrane wyniki badań wykonanych w ramach projektu badawczo-rozwojowego budowy platformy cyfrowej „Prototyp Platformy Usług e-Biznesowych” dotyczących operacji procesu sprzedaży towarów i usług. Prezentowane badania koncentrują się na budowie modelu referencyjnego procesu sprzedaży towarów i usług celem zaimplementowania go w ramach usług e-biznesowych. W ramach prowadzonych badań poddano ocenie pracochłonność realizowanych operacji na losowo dobranej próbie 300 przedsiębiorstw sektora MŚP. Przeprowadzone obserwacje przyczyniły się do wyselekcjonowania kluczowych operacji podlegających potrzebie automatyzacji i implementacji w systemie komputerowo wspomaganego zarządzania udostępnianego w ramach usługi (Software as a Service).
EN
In this paper the results of the studies carried out within the framework of the project research and development of digital platform construction "The Prototype of the e-Business Services Platform" relating to the operations of sale of goods and services process are presented. Presented studies focus on the construction of the reference model of the process of selling goods and services in order to implement it within the framework of the e-business. Within the framework of the research have been evaluating the effort carried out operations on a randomly selected sample of 300 enterprises, the SME sector. Carried out observations contributed to the selection of key operations are subject to the need for automation and implementation in computer-aided management system made available through the service (Software as a Service).
13
Content available remote A user-centered approach to modeling BPEL business processes using SUCD use cases
El-Attar M., Miller J.
e-Informatica Software Engineering Journal
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2007
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Vol. 1, nr 1
58--75
EN
BPEL is being widely used to specify business processes through the orchestration, composition and coordination of web services. It is now common practice to begin the process of modeling the "workflows" within a set of BPEL business processes using UML Activity Diagrams since they can be automatically mapped down onto BPEL code. However activity diagrams were not intended to explicitly model user goals and interactions with external systems offering web services. However, since the chief purpose of BPEL business processes is to first and foremost provide services to their users, using activity diagram modeling alone will not allow an E-commerce analyst to explicitly capture and model the users' goals. In this paper we propose an approach to solve this issue; initially model BPEL business processes using Use Cases to capture users' perspective, and to systematically develop activity diagrams from Use Case models. A Travel Agency system case study is presented illustrates the feasibility of the proposed approach.
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