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Practical Data Migration by Johny Morris

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9 DATA QUALITY RULES

In this chapter I introduce you to a key tool: data quality rules. I will show you:

  • how to construct them;
  • how to use them;
  • where to use them;
  • what a well-constructed data quality rule looks like.

INTRODUCING DATA QUALITY RULES

Data quality rules (DQRs) are central to PDMv2.

  • They keep ownership firmly in the hands of the business (Golden Rule 1).
  • They expose to the project the knowledge hidden in the business (Golden Rule 2).
  • The process of deriving them ensures that the business addresses time and resource limitations (Golden Rule 3).
  • They form a contract between the business and the technicians about what constitutes quality data and how to go about securing it (Golden Rule 4).

On a well-run data migration project, ...

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