Business Intelligence Roadmap: The Complete Project Lifecycle for Decision-Support Applications
The development efforts of early BI applications, such as the early data warehouses, were relatively slow, labor- intensive , risky, and expensive. Extraction and transformation of operational data into a data warehouse frequently involved creating new, custom-written application code. The target databases were either based on proprietary DBMSs or were using proprietary hardware platforms. There was also a shortage of tools to administer, control, and expand the new decision-support environment. The lesson learned from the early BI days was that in order to reach the best performance results for data access and retrieval, a comprehensive application platform must be chosen . Therefore, it is important to select the appropriate hardware, middleware, and DBMS and to ensure that these components are implemented properly. |