I realize that the cost of finding these problems can be enormous, too. It can help to have some industry expert help. I would recommend that you purchase and read any of the several excellent books that Thomas C. Redman has written. These books focus on the data quality problems and have some facts and figures on average cost of poor quality data to business. For more in-depth and technical treatments of data quality management issues I would direct you to books written by Jack Olson and Larry English.
More on data quality management
- Data quality management: Getting started
- Data quality management: Problems and horror stories
- Five steps for weaving data quality management into your enterprise data integration processes
More on building a business case
Dig Deeper on Data quality techniques and best practices
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