Used to avoid setting the Required property of a TField component for NOT NULL fields at the time of opening TMemDataSet.
property LocalConstraints: boolean default True;
Use the LocalConstraints property to avoid setting the Required property of a TField component for NOT NULL fields at the time of opening TMemDataSet. When LocalConstrains is True, TMemDataSet ignores NOT NULL server constraints. It is useful for tables that have fields updated by triggers.
LocalConstraints is obsolete, and is only included for backward compatibility.
The default value is True.