The ASCII attribute is shorthand for CHARACTER SET latin1.
The UNICODE attribute is shorthand for CHARACTER SET ucs2.
The BINARY attribute is shorthand for specifying the binary collation of the column character set.
The CHAR BYTE data type is an alias for the BINARY data type. This is a compatibility feature.
mysql>
mysql> CREATE TABLE myTable
-> (
-> c1 VARCHAR(20) CHARACTER SET utf8,
-> c2 TEXT CHARACTER SET latin1 COLLATE latin1_general_cs
-> );
Query OK, 0 rows affected (0.06 sec)
mysql>
mysql>
mysql> drop table myTable;
Query OK, 0 rows affected (0.00 sec)
mysql>