There are several key performance drivers for a data warehouse. The drivers of performance include the following:
· Data Volume
· Data Complexity
· User Volume
· User Complexity
· Real-Time Data Integration
· Data Latencies – Inbound and Outbound.
The primary challenges in Data Warehousing today are in the areas of:
· Data Loading. Loading data into the data warehouse is one of the longest processes. It is primarily controlled by the volume of data, the complexity of transformations, and the workload on the database at a given point in time. The many reasons for this have been discussed in depth in various ETL articles and case studies. To summarize, the process ...