X(CHAR_FIELD,         "CharField")
X(FILE_FIELD,         "FileField")
X(TEXT_FIELD,         "TextField")
X(INT_FIELD,          "IntegerField")
X(SMALL_INT_FIELD,    "SmallIntegerField")
X(POSITIVE_INT_FIELD, "PositiveIntegerField")
X(BIG_INT_FIELD,      "BigIntegerField")
X(DECIMAL_FIELD,      "DecimalField")
X(BOOL_FIELD,         "BooleanField")
X(TIME_FIELD,         "TimeField")
X(DATETIME_FIELD,     "DateTimeField")
X(DATE_FIELD,         "DateField")
X(ARRAY_FIELD,        "ArrayField")
X(JSON_FIELD,         "JSONField")
X(ONE_TO_ONE_REL,     "OneToOneRel")
X(MANY_TO_ONE_REL,    "ManyToOneRel")
X(MANY_TO_MANY_REL,   "ManyToManyRel")
Y(EMPTY_ARRAY_FIELD,  "EMPTYArrayField")
Y(BROKEN_TO_ONE_REL,  "BROKENToOneRel")
Y(BROKEN_TO_MANY_REL, "BROKENToManyRel")
Y(UNKNOWN_FIELD,      "UNKNOWNField")