Constraint for the field value on the level of the underlying database.
Source position: db.pas line 477
published property TField.ImportedConstraint : string |
ImportedConstraint contains any constraints that the underlying data engine imposes on the values of a field (usually in an SQL CONSTRAINT) clause. Whether this field is filled with appropriate data depends on the implementation of the TDataset descendent.
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Custom constraint for the field's value. |
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Base class for records-based data-access. |
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Message to display if the CustomConstraint constraint is violated. |