data-type:

1 built-in-type
1 distinct-type-name

built-in-type:

1.0.0 SMALLINT
1.0 INTEGER
1.0 INT
1.0 BIGINT
1.0.0 DECIMAL
1.0.0 DEC
1.0 NUMERIC
1.1! (5,0)
1.1?
1.1 ( integer
1.1.1! ,0
1.1.1.1 )