data‑type::= {BIGINT |
   BINARY |
   BLOB |
   CHAR [ length ] |
   CHARACTER LARGE OBJECT |
   CHAR LARGE OBJECT |
   CLOB |
   DATE |
   DECIMAL [(precision [, scale])] |
   DOUBLE [PRECISION] |
   FLOAT [(precision)] |
   INTEGER |
   LONG NATIONAL VARCHAR |
   LONG VARBINARY |
   LONG VARCHAR |
   LONG WVARCHAR |
   NCHAR LARGE OBJECT |
   NUMERIC [(precision [, scale])] |
   NATIONAL CHAR |
   NATIONAL CHARACTER |
   NATIONAL VARCHAR |
   NCHAR |
   NCHAR VARYING |
   NCLOB |
   NVARCHAR |
   REAL |
   SMALLINT |
   TIME |
   TIMESTAMP [(timestamp precision)] |
   TINYINT |
   VARBINARY |
   VARCHAR [(length)] |
   WCHAR |
   WVARCHAR [(length)]}