NULL handling dictates the way in which the MRM parser for TDS messages handles elements that have been set to Null.
The rules for whether nulls are permitted are described in TDS Null handling options.
The element properties Encoding Null and Encoding Null Value control how null handling is represented for individual elements.
You can select the Encoding Null property from the three enumerated values NULLPadFill, NULLLogicalValue, and NULLLiteralValue. The use of the Encoding Null Value property is dependent on the value that you select for the Encoding Null property.
NULL values are not defined for schema xsd:hexBinary simple types. The properties Encoding Null and Encoding Null Value are therefore not set for xsd:hexBinary types.
NULL values for schema Boolean simple types are defined at the message set level. The message set property Boolean Null Representation specifies the value to be used for Boolean Null representation.
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