Click the Defer Index Building with %SortBegin/%SortEnd?
check box if you do not want the wizard to rebuild indices during import. If Defer Index Building
is checked, the wizard calls the %SortBegin method for the class before inserted the imported data into the table. When the import is done the wizard calls the %SortEnd method. No validation is done (same as an INSERT with %NOCHECK). This is because indices cannot be checked for uniqueness during SQL insert when %SortBegin/%SortEnd is used. If Defer Index Building
is checked, the imported data is assumed to be valid and will not be checked for validity.