Unit 'DB' Package
[Overview][Constants][Types][Classes][Procedures and functions][Variables][Index] [#fcl]

TField.ImportedConstraint

Constraint for the field value on the level of the underlying database.

Declaration

Source position: db.pas line 483

published property TField.ImportedConstraint : string
  read FImportedConstraint
  write FImportedConstraint;

Description

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.

See also

TField.CustomConstraint

  

Custom constraint for the field's value.

TDataset

  

Base class for records-based data-access.

TField.ConstraintErrorMessage

  

Message to display if the CustomConstraint constraint is violated.


Documentation generated on: Nov 23 2024