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RPG or C coded definitions (refer to  Virtual Column Derivation in the Technical Reference Guide) may be necessary for complex actions such as:

  • type Type and length conversions.
  • date Date to age conversions.
  • dynamic Dynamic data conversion.

LANSA trigger functions may also be used to create virtual columns. Trigger functions use RDML and provide an alternate option to using RPG or C for coding the virtual column logic.

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