creation.py

from django.db.backends.creation import BaseDatabaseCreation

class DatabaseCreation(BaseDatabaseCreation):
    # This dictionary maps Field objects to their associated CUBRID column
    # types, as strings. Column-type strings can contain format strings; they'll
    # be interpolated against the values of Field.__dict__ before being output.
    # If a column type is set to None, it won't be included in the output.
    data_types = {
        'AutoField':         'integer AUTO_INCREMENT',
        'BooleanField':      'smallint',
        'CharField':         'varchar(%(max_length)s)',
        'CommaSeparatedIntegerField': 'varchar(%(max_length)s)',
        'DateField':         'date',
        'DateTimeField':     'datetime',
        'DecimalField':      'numeric(%(max_digits)s, %(decimal_places)s)',
        'FileField':         'varchar(%(max_length)s)',
        'FilePathField':     'varchar(%(max_length)s)',
        'FloatField':        'double precision',
        'IntegerField':      'integer',
        'BigIntegerField':   'bigint',
        'IPAddressField':    'char(15)',
        'NullBooleanField':  'smallint',
        'OneToOneField':     'integer',
        'PositiveIntegerField': 'integer',
        'PositiveSmallIntegerField': 'smallint',
        'SlugField':         'varchar(%(max_length)s)',
        'SmallIntegerField': 'smallint',
        'TextField':         'string',
        'TimeField':         'time',
   }

    def sql_for_inline_foreign_key_references(self, field, known_models, style):
            "Return the SQL snippet defining the foreign key reference for a field"
            qn = self.connection.ops.quote_name
            if field.rel.to in known_models:
                output = [style.SQL_KEYWORD('FOREIGN KEY') + ' ' + \
                    style.SQL_KEYWORD('REFERENCES') + ' ' + \
                    style.SQL_TABLE(qn(field.rel.to._meta.db_table)) + ' (' + \
                    style.SQL_FIELD(qn(field.rel.to._meta.get_field(field.rel.field_name).column)) + ')' +
                    self.connection.ops.deferrable_sql()
                ]
                pending = False
            else:
                # We haven't yet created the table to which this field
                # is related, so save it for later.
                output = []
                pending = True

            return output, pending