METADATA DRIVEN DATA PARHS. IMPROVING DATA WAREHOUSE PLUMBING

摘要

The authors are involved in a Telco corporationrnreengineering project of a half terabyte Data Warehousern(DW). Firstly the DW context is introduced. Then werndiscuss the actual implicit architecture found in thernruntime system, identifying the problems. Finally thernproposed architecture is presented. It has two views: arnstatic, made with filters and pipes, and a dynamic basedrnon an event driven scheduler, as opposed to a fixed timernone. In the runtime scenario, the scheduler reads the pipernconfigurations from the metadata repository, and thenrnexecutes on the fly the planed filters, transforming datarninto business information.