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- Virtual fields must be first be defined in the Repository. The virtual fields can then be added to the table definition.
- Code fragment derivation which involves calculation, can only be defined as Derive value when record is read.
- Code fragments such as for iiiFullEmployNumber, which concatenate field values, can be defined as Derive value when record is read and Populate real field when writing to the table.
- Virtual fields can have validation rules, just like real fields.
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