Syntax
<data_type> ::= CHAR[ACTER] [(<unsigned_integer>)] [ASCII | BYTE | UNICODE] | VARCHAR [(<unsigned_integer>] [ASCII | BYTE | UNICODE] | CLOB [ASCII | UNICODE] | BLOB | BOOLEAN | FIXED (<unsigned_integer> [,<unsigned_integer>]) | FLOAT (<unsigned_integer>) | INT[EGER] | SMALLINT | DATE | TIME | TIMESTAMP