RAD Studio VCL Reference
TDataSet.Constraints Property

Specifies record-level constraints that must be met when editing the data.

property Constraints: TCheckConstraints;
__property TCheckConstraints Constraints;

Use Constraints to read or add record-level constraints to the dataset. Record-level constraints usually impose relationships between the fields in a single record. Constraints that limit the value of a single field should be added to the individual field components. 


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