Data Quality: The Accuracy Dimension (The Morgan Kaufmann Series in Data Management Systems)

B.4 Data Source

• Type IMS/VSAM/ORACLE/…

• Physical location

• Application name

• Application description

• Database administrator name

• Key dates

  • First deployment date

  • Major change dates

• Extraction information

  • Data conversions needed

  • Overloaded field definitions

• Tables that result from extraction

• Extraction executions

  • Date of extraction

  • Type full or sample