Business Intelligence

Cost-Effective Data Allocation in Data Warehouse Striping

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Executive Summary

The Data Warehouse Striping (DWS) technique is a data partitioning approach especially designed for distributed data warehousing environments. In DWS the fact tables are distributed by an arbitrary number of low-cost computers and each query is executed in parallel by all the computers, guarantying a nearly optimal speed up and scale up. Data loading in distributed data warehouses is typically a heavy process and brings the need for loading algorithms that conciliate a balanced distribution of data among nodes with an efficient data allocation. These are fundamental aspects to achieve low and uniform response times and, consequently, high performance during the execution of queries.

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