`TParam`
		AsBCD
		AsBlob
		AsBoolean
		AsByte
		AsBytes
		AsCurrency
		AsDate
		AsDateTime
		AsFloat
		AsInteger
		AsLargeInt
		AsLongWord
		AsMemo
		AsShortInt
		AsSingle
		AsSmallInt
		AsString
		AsAnsiString
		AsUTF8String
		AsUnicodeString
		AsTime
		AsWord
		AsFMTBCD
		Bound
	ro	Dataset
	ro	IsNull
		NativeStr
		Text
		AsWideString
pl		DataType
pl		Name
pl		NumericScale
pl		ParamType
pl		Precision
pl		Size
pl		Value