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Auflistung nach Autor:in "Roth, Sascha"

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  • Konferenzbeitrag
    Future Research Topics in Enterprise Architectures Evolution Analysis
    (Software Engineering 2013 - Workshopband, 2013) Roth, Sascha; Matthes, Florian
    An Enterprise Architecture (EA) embraces an organization technical infrastructure, applications, business capabilities, and relationships among them. Evolutionary design is a common characteristic for such an EA. An EA can be considered as a complex system of systems, whereas the actual efforts for its maintainability and evolution have a high influence on the enterprise s capability to quickly respond to market changes. A common means to analyze an EA are visualizations. However, research on visual means for analysis of EA evolutions is scarce. In this paper we outline visual means to analyze the evolution of EAs and motivate research on this topic by outlining related challenges.
  • Zeitschriftenartikel
    IT-Abschlussprüfung — Herausforderung und Chance
    (Wirtschaftsinformatik & Management: Vol. 7, No. 4, 2015) Schulz, Christopher; Roth, Sascha
  • Konferenzbeitrag
    A method for constructing enterprise-wide access views on business objects
    (INFORMATIK 2010. Service Science – Neue Perspektiven für die Informatik. Band 2, 2010) Buckl, Sabine; Matthes, Florian; Roth, Sascha; Schulz, Christopher; Schweda, Christian M.
    Modern application landscapes consist of a multitude of inter-connected business applications exchanging data in manifold ways. These business applications are used by employees who take on several organizational roles. However, when broadening the scope to an enterprise-wide perspective, lack of clarity and uncertainty prevail regarding the questions which roles have access on which business applications as well as the business objects managed by them. In contrast to alternative approaches, e.g. single sign on, this paper focuses on the enterprise-wide availability of business objects. Motivated by a case study from the car manufacturing industry, this article describes a method to analyze and justify an enterprise-wide access matrix. Respective viewpoints are presented facilitating a business object access management on enterprise level. The method and concepts are further substantiated by means of the case study.
  • Konferenzbeitrag
    Towards a conceptual framework for interactive enterprise architecture management visualizations
    (Modellierung 2012, 2012) Schaub, Michael; Matthes, Florian; Roth, Sascha
    Visualizations have grown to a de-facto standard as means for decisionmaking in the management discipline of enterprise architecture (EA). Thereby, those visualizations are often created manually, so that they get soon outdated since underlying data change on a frequent basis. As a consequence, EA management tools require mechanisms to generate visualizations. In this vein, a major challenge is to adapt common EA visualizations to an organization-specific metamodel. At the same time, end-users want to interact with the visualization in terms of changing data immediately within the visualization for the strategic planning of an EA. As of today, there is no standard, framework, or reference model for the generation of such an interactive EA visualization. This paper 1) introduces a framework, i.e. an interplay of different models to realize interactive visualizations, 2) outlines requirements for interactive EA management visualizations referring to concepts of the framework, 3) applies the framework to a prototypical implementation detailing the therein used models as an example, and 4) compares the prototype to related work employing the framework.
  • Zeitschriftenartikel
    Visualizing Differences of Enterprise Architecture Models
    (Softwaretechnik-Trends Band 34, Heft 2, 2014) Roth, Sascha; Matthes, Florian
    Enterprise Architecture (EA) models are structured, object-oriented models that typically conform to an organization-specific, i.e. customized, meta-model that evolves over time. Enterprise architects commonly use different branches of such an EA model to plan future states of an EA with respect to their origin–the current state of an EA. It is particularly interesting for enterprise architects to analyze differences of planned states to this current state of an EA. Based on these differences they can derive projects as means to carry out changes in order to realize planned states as temporally limited end. In our previous work, we focus on the evolution of models and meta-models, model differencing, merging, and conflict detection and resolution. A particular challenge we observed is the communication of model differences. We diagnose that as of today, no common standard to visualize and analyze differences in models and in particular Enterprise Architecture (EA) models has been established. In this paper, we present a four-layered conceptual design of an interactive visualization to drill down and analyze model differences in meta-models (schema) and respective models (data). Our design copes with the complexity of an EA model and provides mechanisms to filter particular parts of an EA model. We reveal implementation details of the concept, discuss end-user feedback on our prototype and point out some known limitations of the approach.