Sources of Data Quality Problems
Data Warehousing Institute 2002 Survey
The following table reports the results of an industry survey of sources of data quality problems:
|
Source |
Percentage |
|
Data entry by employees |
76 |
|
Changes to source systems |
53 |
|
Data migration or conversion projects |
48 |
|
Mixed expectations by users |
46 |
|
External data |
34 |
|
System errors |
26 |
|
Data entry by customers This includes typographical errors and information typed into the wrong fields made when entering data into forms on the World Wide Web. |
25 |
|
Other |
12 |
|
Source: Wayne W. Eckerson, Data Quality and the Bottom Line: Achieving Business Success Through a Commitment to High Quality Data, The Data Warehousing Institute, 2002. |
|