Nico Brehm
Otto-von-Guericke University Magdeburg
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Publication
Featured researches published by Nico Brehm.
International Journal of Information Systems and Change Management | 2006
Sven Abels; Nico Brehm; Axel Hahn; Jorge Marx Gómez
In this paper, the domain of Federated Enterprise Resource Planning (FERP) systems is described. FERP systems consist of several service-oriented systems that implement the Enterprise Resource Planning (ERP) functionality in a distributed manner. Within this context, this paper focuses on challenges and requirements that arise when updating systems and changing their orchestration. This paper describes similarities to change management issues of conventional ERP systems and it describes emerging issues that appear when dealing with a distributed ERP system. Moreover, this paper introduces possible solutions in order to ease the process of changes.
International Journal of Information Technology and Management | 2010
Nico Brehm; Jorge Marx Gómez
In the harsh competition between todays enterprises the use of business software systems plays an important role. Software systems integration of different enterprise sectors is one of the most commonly discussed topics and the implementation of a Service-Oriented Architecture (SOA) becomes more and more interesting not only for large companies but for Small and Medium-Sized Businesses (SMB) as well. This paper presents the approach of a Federated Enterprise Resource Planning (FERP) system on the basis of Web Services and Peer-to-Peer (P2P) networks as a first step towards vendor-independent ERP systems. In this work we propose a component-oriented system design and the application of the SOA paradigm. Furthermore, the distribution of ERP system components over P2P networks is considered. Finally we show an example business process and point out first evaluation activities.
business information systems | 2007
Nico Brehm; Jorge Marx Gómez
ERP systems consist of many software components which provide specific functionality. However, these ERP systems are designed as an all-inone solution, often implementing functionality not needed. The paper presents the reference architecture of a federated ERP system which allows the distribution of ERP system components on the basis of Web Services and shows how these Web Services can be developed and provided by different software vendors. The architecture draws upon a hierarchical standardization model of data and service types. The model advances the reusability of data types and reduces the necessity of data transformation functions in business process descriptions. Furthermore the concrete architecture of a prototype implementation on the bases of open source software components is described.
Journal of Information Privacy and Security | 2005
Nico Brehm; Jorge Marx Gómez
Abstract Enterprise Resource Planning (ERP) systems integrate operational application systems of different enterprise sectors. Logistics, human resource management and business accountancy are the most important components, the business Junctions of ERP systems can be assigned to. Besides the advantages of an integrated solution a number of disadvantages arise from the complexity of such systems. Particularly small- and medium-sized enterprises (SME) are affected by typical disadvantages like high operating- and maintenance costs which means that they cannot afford to buy and maintain an enterprise-wide integrated ERP system. A feasible opportunity to counter these problems is to develop a distributed (federated) system architecture based on loosely coupled components and their functions in order to partly reduce the complexity of the super-ordinate system. The presented paper describes the distribution of ERP systems on the basis of Web Services and gives a first proposal of a prototype. ERP system functions are distributed within a peer-to-peer architecture and are managed by different network nodes (providers). The major risks of this approach are connected to security problems which appear when confidential enterprise data is handled. A continuously automated function (service) integration from service discovery until service response processing increases the already existing risks. An important issue in this context is the consideration of trust relationships between service consumers and service providers. In our proposed solution security configurations based on XML policies are used to meet the security requirements of both communication partners in an open network.
business information systems | 2009
Nico Brehm; Liane Haak; Dirk Peters
Enterprise Systems like Enterprise Resource Planning (ERP) systems are an important application area in higher education and getting more and more complex. Therefore problems occur from different perspectives and increase the difficulties in teaching. Existing software products cannot be used to teach specific technical aspects, like e.g. Web Services because it is still research in progress. This contribution reports about using a Federated ERP (FERP) system as an example for a Web Service-based ERP system to introduce aspects of Service Oriented Architectures (SOA) in higher education.
international conference on information and communication technologies | 2008
Liane Haak; Nico Brehm
One common goal in the area of very large business applications (VLBAs) is integration to achieve lean and efficient processes. In addition, semantic integration using ontologies is the next step to interoperability. In this paper we describe an approach how ontologies could support VLBAs. To clarify the problems and challenges we explain semantic integration in the context of the FERP systems.
Archive | 2007
Nico Brehm; Daniel Lübke; Jorge Marx Gómez
multikonferenz wirtschaftsinformatik | 2008
Nico Brehm; Jorge Marx Gómez; Andreas Ziesenitz
Archive | 2007
Nico Brehm; Jorge Marx Gómez
multikonferenz wirtschaftsinformatik | 2008
Nico Brehm; Nils Heyer; Jorge Marx Gómez; Boris Richter