A Java datatype is mappable if it is either: Listed in the first column of Table 8-3, or A public Java-SQL class that is installed in the Adaptive Server system. A SQL datatype is mappable if it is either: Listed in the first column of Table 8-4, or A public Java-SQL class that is built-in or installed in the Adaptive Server system. A Java method is mappable if all of its parameter and result datatypes are mappable.