Returns the names of all fields required to uniquely identify records in the data packet.
function PSGetKeyFields: string; override;
virtual __fastcall AnsiString PSGetKeyFields();
The provider component calls PSGetKeyFields to determine what information is required to uniquely identify records in the data packet. This information allows it to locate the records that need to change when it applies updates.
PSGetKeyFields returns a semicolon-delimited string that lists the names of the key fields of the dataset. By default (as implemented by TDataSet), these are the fields with pfInKey included in their ProviderFlags property.
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