- Data Latency
- Data Quality Degradation
- Cost of ETL development and Support
- Number of copies of the same data element
- Can we get the Business Intelligence that is intended
This may seem obvious, but I ask you to quantify that cost. That very thing happened the other day with a client, so we are actually working on quantifying the direct cost. This will not include the cost of having the same question asked of three people and getting five different answers back.
In the past we have used distribution as an example or metaphor for explaining Data Warehousing – the same metaphor holds true in the moving of data. The more we handle an item the more the spoilage or shrinkage.