Although Informix® implements
sequence objects as tables, only the following subset of the table
privileges (as described in Table-Level Privileges)
can be granted or revoked on a sequence:
Select privilege
Alter privilege
Use the following syntax to specify privileges to revoke
on a sequence object:
The sequence must reside in the current database. (You
can qualify the sequence or synonym identifier with
a valid owner name, but the name of a remote database (or database@server)
is not valid as a qualifier.) Syntax to revoke sequence-level privileges
is an extension to the ANSI/ISO standard for SQL.