scholarly journals CMDB – Yet Another MIB? On Reusing Management Model Concepts in ITIL Configuration Management

Author(s):  
Michael Brenner ◽  
Markus Garschhammer ◽  
Martin Sailer ◽  
Thomas Schaaf
Author(s):  
T. W. Carnduff ◽  
J. S. Goonetillake

This chapter presents research aimed at determining the requirements of a database software tool that supports integrity validation of versioned-design artefacts through effective management of evolving constraints. It has resulted in the design and development of a constraint management model, which allows constraint evolution through representing constraints within versioned objects called Constraint Versions Objects (CVOs). This model operates around a version model that uses a well-defined configuration management strategy to manage the versions of complex artefacts. Internal and inter-dependency constraints are modelled in CVOs. The combination of our versioning, configuration management, and constraint management approaches has produced a unique model which has been implemented in a prototype database tool with an intuitive user interface. The user interface allows designers to manage design constraints without the need to program. The innovative concepts developed in this chapter are introduced using an ongoing example of a simple bicycle design.


2010 ◽  
Vol 2010 ◽  
pp. 1-21 ◽  
Author(s):  
Christopher Weld ◽  
Michael Duarte ◽  
Rex Kincaid

The runway configuration management (RCM) problem governs what combinations of airport runways are in use at a given time, and to what capacity. Runway configurations (groupings of runways) operate under runway configuration capacity envelopes (RCCEs) which limit arrival and departure capacities. The RCCE identifies unique capacity constraints based on which tarmacs are used for arrivals, departures, or both, and their direction of travel. When switching between RCCEs, some decrement in arrival and departure capacities is incurred by the transition. A previous RCM model (Frankovich et al., 2009) accounted for this cost through a required period of inactivity. In this paper, we instead focus on the introduction and assessment of a model capable of marginally decreasing RCCE capacities during configuration transitions. A transition penalty matrix is introduced, specifying the relative costs (in terms of accepted arrival and departure capacities) for switching between RCCEs. The new model benefits from customizable transition penalties which more closely represent real-world conditions, at a reasonable computational cost.


1999 ◽  
Vol 28 (540) ◽  
Author(s):  
Henrik Bærbak Christensen

The Ragnarok project is an experimental computer science project within the field of software development environments. Taking current problems in software engineering as starting point, a small set of hypotheses are proposed, outlining plausible solutions for problems concerning the management of the development process and its associated data, and outlining how these solutions can be supported directly in a development environment. These hypotheses are all deeply rooted in the viewpoint that the logical software architecture forms a natural and powerful framework for handling essential aspects of the development process. <br /> <br /> The main contributions presented in the thesis have evolved from work with two of the hypotheses: These address the problems of management of evolution, and overview, comprehension and navigation respectively. <br /> <br /> The first main contribution is the Architectural Software Configuration Management Model: A software configuration management model where the abstractions and hierarchy of the logical aspect of software architecture forms the basis for version control and configuration management. The second main contribution is the Geographic Space Architecture Visualisation Model: A visualisation model where entities in a software architecture are organised geographically in a two-dimensional plane, their visual appearance determined by processing a subset of the data in the entities, and interaction with the project's underlying data performed by direct manipulation of the landscape entities. <br /> <br /> A major effort has been invested in the design, development and deployment of a prototype software development environment, Ragnarok, that implements the core of these models. The Ragnarok prototype has been used in three, small- to medium-sized, real development projects for nearly three years. <br /> <br /> The main results from the three case studies are the following: The architectural software configuration management model is a natural and viable model for configuration management, at least for small- to medium-sized systems. The model's main assets are that it minimises the gap between the concepts used in the development domain and configuration domain; and its emphasis on bound configurations ensures traceability and reproducibility of configurations and architectural changes. The geographic space architecture visualisation model is a viable model for visualising the logical aspect of an architecture. The model's main assets are enhanced navigational abilities as the focus is shifted from name-based to location-based search which allows humans' fine spatial memory to be exploited; and strengthened overview as the architecture is visible and readily accessible in a compact form.


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