Auto-increment field

How to create it in

a) MySQL:

CREATE TABLE `t1` ( `id` INT UNSIGNED AUTO_INCREMENT , ... ) AUTO_INCREMENT=... ;

b) PostgreSQL:
first create the sequence:

CREATE SEQUENCE "seq1" INCREMENT BY ... START WITH ... ;

and then - create the table:

CREATE TABLE "t1" ( "id" INT NOT NULL DEFAULT nextval('seq1') ...);

c) Microsoft SQL Server

CREATE TABLE [t1] ( [id] [int] NOT NULL identity(1, 2) ...);

(this means start with 1 and increment by 2 each time )