The WebAbility® Network Developers - Documentation
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Errors and Exceptions
Dominion comes with a set of classes to throw events with the PHP5 try-throw-catch system.

Actually, the Dominion tree events is:

Errors:
  • DB_BaseError [New]
  • DB_ConnectionError [New]

Exceptions:
  • DB_DateException [New]
  • DB_uTimeException [New]
  • DB_CursorException [New]