The following is excerpted from "The Overall Approach to Data Quality ROI" by William McKnight. For a copy of the full paper, please visit www.firstlogic.com/paper or www.mcknight- associates.com/downloads. Steps 1 through 3 were covered in McKnight's August column.

When the systems and the data quality rules are identified and the data is characterized, the data quality must be scored. Scoring will represent the state of the data quality for that rule. System scores will be an aggregate of the rule scores for that system, and the overall score will be a prorated aggregation of the system scores.

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