Information Systems

Download Advances in Information Systems Development by Gabor Maygar, Gabor Knapp, Wita Wojtkowski, Gregory PDF

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

Information platforms improvement (ISD) progresses quickly, constantly growing new demanding situations for the pros concerned. New suggestions, ways and strategies of structures improvement emerge consistently during this box. growth in ISD comes from learn in addition to from perform. the purpose of the convention is to supply a world discussion board for the trade of principles and reports among academia and undefined, and to stimulate exploration of recent solutions.

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It is possible to use outlines of graph theory for transformations between MDA models. One more innovation received during practical experiments is enlargement of the PIM. The interaction models are moved from the PSM to the PIM for system structure representation at this level. Moreover, the practical example discussed in the paper shows that application of the formalized Two-Hemisphere Model Driven approach could make the process of system analysis and design easier. If the further formalization of the 2HMD will be successful it will be possible to automate the system analysis and design in order to reduce required software developers’ efforts.

7 Summary and Conclusion Databases are today serving companies with data that are interpreted to information and used not only by the end users in their daily work but also during critical decision-making. This indicates that a DB needs to deliver correct data when an end user is making a request for it. Database consistency is therefore a critical issue because an inconsistent DB may deliver erroneous data to an end user which Designing Software Components for Database Consistency 45 in the long run may influence how profitable a company is.

In the third section, we focus on how to avoid inconsistency in conceptual descriptions of databases, information systems and software components and then we describe how to design for consistency using the semantic dependencies of the EM approach. Finally, the paper is summarized and conclusions are discussed and described. 2 Dependencies in the EM Approach The ability to describe an IS in a clear and sufficiently rich way, although still comprehensible and easy to use, is acknowledged as crucial in many areas including IS and software engineering.

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