Valid values are 'packed', 'bcd', 'ibm4690Packed', 'binarySeconds', 'binaryMilliseconds'

For all values, the dfdl:byteOrder property is used to determine the numeric significance of the bytes making up the representation.

'packed' means represented as an IBM 390 packed decimal. Each byte contains two decimal digits, except for the rightmost byte, which contains a sign to the right of a decimal digit. The digits are interpreted according to the dfdl:calendarPattern property. Property dfdl:binaryPackedSignCodes is applicable.

'bcd' means represented as a binary coded decimal with two digits per byte. The digits are interpreted according to the dfdl:calendarPattern property.

'ibm4690Packed' means represented as a variant of packed format as described in property dfdl:binaryNumberRep.The digits are interpreted according to the dfdl:calendarPattern property.

For all packed decimals, property dfdl:binaryNumberCheckPolicy is applicable.

See Properties specific to numbers with binary representation section :  13.7 Properties Specific to Numbers with Binary Representation.

For all these packed decimals, dfdl:calendarPattern can contain only characters and symbols that always result in the presentation of digits. It is a schema definition error otherwise. This implies that property dfdl:calendarPatternKind must be 'explicit' because the default patterns for 'implicit' contain non-numeric characters. It is a schema definition error otherwise.

For all packed decimals, a virtual decimal point for the boundary between seconds and fractional seconds is implied from the pattern at the boundary of 's' and 'S', i.e., where the substring 'sS' appears in the pattern.

'binarySeconds' means represented as binary xs:int, that is, as a 4 byte signed integer that is the number of seconds from the epoch (positive or negative).  It is a schema definition error if there is a specified length not equivalent to 4 bytes.

'binaryMilliseconds' means represented as binary xs:long, that is, as an 8 byte signed integer that is the number of milliseconds from the epoch (positive or negative).  It is a schema definition error if there is a specified length not equivalent to 8 bytes.  

binarySeconds and binaryMilliseconds may only be used when the type is xs:dateTime. It is a schema definition error otherwise.

Annotation: dfdl:element, dfdl:simpleType