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Principle 12 - Data Common base of data.

A common base of data must be created to allow sharing, control redundancy and satisfy retention requirements.


Sharing data and controlling duplication of data are cost-effective and increase accuracy. Historical data must be retained to satisfy business requirements.


  • Physical storage of data must comply with the requirements of the data and technical architectures and cannot inhibit access.
  • Cost-effectiveness as well as business needs must be evaluated when retaining historical data.
  • The expectation is that data will not be stored redundantly; however, when limitations in technology or resources require redundancy, the data must be retrieved from the database of record.
  • Standards need to be developed for data retention.
  • Documentation for historical data must be maintained and made available.

Information Systems and Computing
University of Pennsylvania
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