Analytische Informationssysteme: Data Warehouse, On-Line by Peter Gluchowski, Peter Chamoni

By Peter Gluchowski, Peter Chamoni

Informationssysteme für die analytischen Aufgaben von Fach- und Führungskräften treten verstärkt in den Vordergrund. Dieses etablierte Buch diskutiert und evaluiert Begriffe und Konzepte wie enterprise Intelligence und colossal facts. Die aktualisierte und erweiterte fünfte Auflage liefert einen aktuellen Überblick zu Technologien, Produkten und tendencies im Bereich analytischer Informationssysteme. Beiträge aus Wirtschaft und Wissenschaft geben einen umfassenden Überblick und eignen sich als fundierte Entscheidungsgrundlage beim Aufbau und Einsatz derartiger Technologien.

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Example text

What-if scenarios). There were no specific dollar amounts assigned to these benefits. Although the data warehouse budget request was for $50 million, the initial projected costs of the project were estimated at $100 million. Currently about $22 million has been spent. The size of the data warehouse is currently about six terabytes and stores only data useful for decision support. Operational data is stored in a specific datastore which is currently about 500 GB. The project faced many obstacles.

In retrospect, user involvement should begin during development and continue through to testing and production. It is not recommended that a project be undertaken without a clear idea of the need. There should be a plan. Otherwise, there may arise issues, such as Iack of support and run-away budgets. 9 Workers Compensation Organization Management at a Workers Compensation organization in North America had a difficult time accessing needed data. Recognizing the potential of a data warehouse for solving this problem, several key IS managers initiated discussions on building a warehouse.

DarreH Piatt, wbo had previous data warebousing experience, was brought in to lead the project. Taking the consultant's data warebouse recommendation as a starting point, Piatt added necessary details. The proposal was presented to the CEO wbo gave bis approval for the project. Work on the warebouse started on September 1995 and the initial version was rolled out six months later. It cost $280,000 for bardware and software, $200,000 for end user access tools, and $330,000 for intemal personnel costs and occasional consultant's time.

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