1. The document summarizes a presentation given by Jos Leber of T-Mobile Netherlands on their data quality efforts. 2. It describes the steps they took during a project called Phoenix to clean customer data and develop tools to measure data quality. 3. It then outlines the additional steps they took after the project, including developing a data quality monitoring process and a data management maturity model to guide their continued work.

1. Event: DDMA Seminar Thema: Datakwaliteit Spreker: Jos Leber – T-Mobile Datum: 5 juni 2007 www.ddma.nl

2. Data Quality Award 2006 Presentatie T-Mobile Seminar Data Kwaliteit DDMA 5 juni 2007 Jos Leber – Data Manager T-Mobile Netherlands BV DM

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10. Technical concept DQ Dashboard BSCS Clarify Copy Copy Compare & Quality Database tuned queries Spot inconsistencies2x Persistent inconsistencies CSV Monthly Da i ly Active Compare Statistics (Excel) + details file Summary Sheet (Excel) IPB Report (Powerpoint) Quality issues Active Quality Statistics (Excel) + details file Weekly

11. Data Quality Management Results Since June 2005 T-Mobile has taken a structural approach to Data Quality Management (DQM) Results since mid 2005 June 6 th 2005 November 17 th 2005 Result is: We have prevented ca 20.000 potential customer problems like incorrect invoices, incorrect network settings etc For the customer this means no disruption in using our products and services. For Customer Services this means fewer calls and fewer complaints. For IT this means less incidents to be solved And ultimately higher customer satisfaction! June 6 th 2005

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