How can I know the precision and scale of a decimal field

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C++

Using ACEDAO in VC++, I am trying to retrieve the field details of an Access database (.accdb file) table of which one field is of decimal type. I am able to get the details using the functions of

DAO::_FieldPtr field;

as follows:

			fieldName = field->GetName().GetBSTR();
			nType = field->GetType()   // returns DAO::dbDecimal
			lSize = field->GetSize();  // returns 16
			lAttr = field->GetAttributes();  // returns 0x000002H
			nOrdinal = field->GetOrdinalPosition(); // returns 11
			bAutoIncrement = ((lAttr & DAO::dbAutoIncrField) > 0);

DAO::PropertiesPtr props;
DAO::PropertyPtr prop;
int k, nProp;
std::wstring propName, propNames;

props = field->GetProperties();

if(props)
{
	nProp = props->GetCount();  // returns 33
        for(k = 0; k < nProp; k++)
        {
            prop = field->GetProperties()->GetItem((short) k);
	    if(prop)
	    {
		propName = prop->GetName().GetBSTR();
                propNames += propName;
                propNames += L"\n";
            }
        }

        // After exiting the loop, propNames contain 33 properties as:
	//	Value
	//	Attributes
	//	CollatingOrder
	//	Type
	//	Name
	//	OrdinalPosition
	//	Size
	//	SourceField
	//	SourceTable
	//	ValidateOnSet
	//	DataUpdatable
	//	ForeignName
	//	DefaultValue
	//	ValidationRule
	//	ValidationText
	//	Required
	//	AllowZeroLength
	//	AppendOnly
	//	Expression
	//	FieldSize
	//	OriginalValue
	//	VisibleValue
	//	GUID
	//	ColumnWidth
	//	ColumnOrder
	//	ColumnHidden
	//	Description
	//	DecimalPlaces
	//	DisplayControl
	//	TextAlign
	//	AggregateType
	//	ResultType
	//	CurrencyLCID
        //      But does not have any property named "Scale" or "Precision"
}

I could not find any function for retrieving the value for precision and scale for the decimal field.

Though I am able to retrieve the field value as a decimal number and get the required information from the structure, I think it is not the right way. Because, what will happen if the data for field is not available in the table?

Is there any other method to retrieve the precision and scale of a decimal type field using ACEDAO?

Thanks.