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Step 8 Validate command

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Sam edited this page Jun 25, 2017 · 3 revisions

Validate command

Remember that command validation is different to data validation. Command validators don't validate against business rules, they validate against data integrity rules.

Data integrity rules

Data integrity rules are rules such as:

  • Does this property have a value, because it's required?
  • Does this property value match a regular expression such as ensure it is an email address or url., not does this email address exists or not.
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