Developing Quality Complex Database Systems: Practices, by Shirley Becker

By Shirley Becker

The target of constructing caliber complicated Database platforms is to supply possibilities for making improvements to brand new database platforms utilizing cutting edge improvement practices, instruments and methods. every one bankruptcy of this e-book will supply perception into the potent use of database expertise via versions, case experiences or event experiences. An emphasis is put on organizational and administration concerns linked to using such expertise including classes discovered and most sensible practices.

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As a result, database quality suffers until it is re-engineered. The authors provide heuristics to redesign the conceptual schema, which are based on the identification of hidden business rules and the conversion of non-key inclusion dependencies into key-based ones. " This work focuses on the fact that huge investments have been made in enterprise resource planning (ERP) systems, and more value could be realized if databases semantically reflected the underlying reality of organizations. They review empirical research on semantically modeled information systems and then provide an example of a semantic model as proof of concept.

The averages of the respondents' estimations for the 64 application fields in the questionnaire were aggregated to 12 application areas which are shown in Table 1. The aggregation was done by averaging the averages of the single application fields for each application area. Table 1 shows the means of the target values (target means) and the actual values (actual means) per application area, as well as the differences between these two figures. Generally, the differences between the respondents' estimations of actual values were significantly lower than the estimations of the target values (statistical test: t-test, level of significance for the differences between target and actual mean for all application fields < 0,001, number of valid cases between 36 and 43).

Semantically Modeled Databases in Integrated Enterprise Information Systems Cheryl L. Dunn, Florida State University Severin V. Grabiski, Michigan State University 279 13. Set Comparison Queries in SQL Mohammad Dadashzadeh, Wichita State University 303 Page f 14. Toward a Framework for Advanced Query Processing Suk-Chung Yoon, Widener University 317 15. Security in Database Systems: State of the Art Eduardo Fernandez-Medina Paton, Universidad de Castilla-La Mancha Mario G. Piattini, Universidad de Castilla-La Mancha 331 16.

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