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Authors
Advisor(s)
Abstract(s)
A informação para suporte à decisão constitui o tema central deste documento, sendo analisada a sua importância no actual contexto externo e interno das organizações.
A análise da evolução dos Sistemas de Informação, revela-nos que estes têm sido desenvolvidos com o objectivo principal de suportar e automatizar os processos operacionais de negócio. Os dados sempre foram considerados como apêndices dos programas, estes o verdadeiro foco dos desenvolvimentos. A recolha incoerente dos dados, processados por várias aplicações com diferentes objectivos, e o seu armazenamento em estruturas definidas e orientadas pelos informáticos, provocaram a desintegração da infraestrutura de dados organizacional. Impedidos de entenderem os dados como assuntos de negócio, os decisores continuam a depender da informação fornecida pelos profissionais de informática. Só que aos decisores nunca se fornece realmente a informação de que necessitam. São eles que a criam da leitura, análise e interpretação dos dados, internos e externos, no contexto de uma decisão específica.
No suporte dos processos de tomada de decisão, são levantadas 3 questões fundamentais: integração e reorientação dos dados para os assuntos de negócio; manutenção da informação histórica; ferramentas de utilização intuitiva para a exploração e análise da informação. O Data Warehouse e o conceito de OLAP apresentam-se como respostas a estas questões. Neste trabalho serão desenvolvidos; o conceito de Data Warehouse', seus objectivos; métodos de desenvolvimento; impacto esperado nas organizações; justificação do projecto; métodos e ferramentas para a análise e exploração da informação. Será ainda proposto um modelo organizacional para planeamento e desenvolvimento de um projecto de Data Warehouse, devendo este ser entendido como uma excelente oportunidade para repensar a gestão da informação nas organizações.
The information as a basis for decision constitutes the main theme of this document, where its importance in the current external and internal context of organizations will be analyzed. The analysis of the evolution of Information Systems reveals that these have been developed with the main objective of supporting and automating the operational business processes. Data have always been considered as appendixes to the programs, these the real target for development. The incoherent gathering of data, processed by several applications with different objectives, and its storage in structures defined and oriented by Information Technology staff, caused the disintegration of the organizational data infrastructure. Prevented from understanding data as a business subject, the decision makers continue to depend upon the information supplied by the I.T. professionals. But the information they are given is never the one they really need. Ifs them who create the required information from the reading, analysis and interpretation of the data, internal and external, in the context of a specific decision. In the support of the decision making processes, three fundamental questions arise; integration and reorientation of data for the business matters; maintenance of the historical information; intuitive tools for exploring and analyze the information. The Data Warehouse and the OLAP concept present themselves as answers to these questions. In this work will be further expanded: the concept of Data Warehouse; its objectives; the developing methods; the expected impact on organizations; justification of the project; the methods and tools to analyze and explore of its information, also being proposed an organizational model for planning and developing a project of Data Warehouse, this one being understood as an excellent opportunity to re-think the management of information in the organizations.
The information as a basis for decision constitutes the main theme of this document, where its importance in the current external and internal context of organizations will be analyzed. The analysis of the evolution of Information Systems reveals that these have been developed with the main objective of supporting and automating the operational business processes. Data have always been considered as appendixes to the programs, these the real target for development. The incoherent gathering of data, processed by several applications with different objectives, and its storage in structures defined and oriented by Information Technology staff, caused the disintegration of the organizational data infrastructure. Prevented from understanding data as a business subject, the decision makers continue to depend upon the information supplied by the I.T. professionals. But the information they are given is never the one they really need. Ifs them who create the required information from the reading, analysis and interpretation of the data, internal and external, in the context of a specific decision. In the support of the decision making processes, three fundamental questions arise; integration and reorientation of data for the business matters; maintenance of the historical information; intuitive tools for exploring and analyze the information. The Data Warehouse and the OLAP concept present themselves as answers to these questions. In this work will be further expanded: the concept of Data Warehouse; its objectives; the developing methods; the expected impact on organizations; justification of the project; the methods and tools to analyze and explore of its information, also being proposed an organizational model for planning and developing a project of Data Warehouse, this one being understood as an excellent opportunity to re-think the management of information in the organizations.
Description
Mestrado em Gestão/MBA
Keywords
Data Warehouse OLAP Informação Suporte à decisão Sistemas informacionais gestão da informação Information Decision support Information systems Information management
Pedagogical Context
Citation
Rodrigues, Eduardo Jorge Dias (1997). "Data warehouse: uma oportunidade para repensar a gestão da informação". Dissertação de Mestrado. Universidade Técnica de Lisboa. Instituto Superior de Economia e Gestão.
Publisher
Instituto Superior de Economia e Gestão