These articles are specific to the Rules of PIRRIDM. You may select an article from the list to see the details.


Transformation rules are applicable to Data elements, and may be divided into two broad categories:

  • Presentation - refers to how data is presented to, or obtained from, a user. The presentation may include a user interface or on a static report.
  • Storage - refers to how data is physically stored and retrieved.


 Validation and Verification Rules describe tests that are applied to data to determine if the data is acceptable. In this article, I describe:

  • The difference between Validation and Verification Rules.
  • How to interpret the results of the tests.
  • Some examples of how to apply Validation and Verification Rules.


This article provides examples of how the Validation and Verification Rules may be applied.

There are three scenarios:

  • Scenario 1: Mandatory entry.
  • Scenario 2: Optional entry.
  • Scenario 3: Prohibited entry.