Advances in Information Systems Development: Volume 2 by Gabor Maygar, Gabor Knapp, Wita Wojtkowski, Gregory

By Gabor Maygar, Gabor Knapp, Wita Wojtkowski, Gregory Wojtkowski, Jože Zupancic

This quantity contains the complaints of the fifteenth overseas convention on details structures improvement (ISD). ISD progresses speedily, always developing new demanding situations. growth in ISD comes from learn in addition to from perform. the purpose of the convention is to supply a global discussion board for the trade of principles and studies among academia and undefined, and to stimulate exploration of latest solutions.

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It has been shown that EM can be used to achieve a generic and integrated approach to designing databases and compo- Designing Software Components for Database Consistency 43 nents [6]. Some consistency issues can be resolved by the DBMS, but far from all. All transactions that may transform the DB from a consistent state to a state of inconsistency must be addressed by the DBMS or the component communicating with the DBMS. Furthermore, a design procedure containing the steps, 1: Customer requirements, 2: Database view modeling, 3: Software component modeling, 4: Conceptual database integration, 5: Conceptual software component integration, 6: Conceptual model integration into global schema containing software components and database, has been defined [6].

Receiving of the conceptual model from the BP model Construction of sub-process models is not shown here. These should be constructed for each process from the initial model. By the proposed approach the next major step of model transformation is receiving of the transitional auxiliary model (TAM) from the sub-process model. 9. It is assumed that both models are graphs. As shown in graph transformation, nodes from the sub-process graph will be transformed into arcs of the TAM, and arcs of the sub-process will be transformed into nodes of the TAM.

There are selected changes performed during improvement of the 2HMD approach discussed in the paper. The first change is that in the “Formalized 2HMD approach” the PIM is presented as two models – the sub-process model and the transitional auxiliary model instead of the use-case diagram in the “Original 2HMD”. The sub-process model for each process to be automated should be constructed on the base of the Model of system functioning. This is the formal base for further system design. For facilitating of transition from the sub-process model to the interaction model, the transitional auxiliary model is used.

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