CREATE TABLE WIKI_cur (
   cur_id int(10) unsigned NOT NULL auto_increment,
   cur_title varchar(255) NOT NULL,
   cur_text text NOT NULL,
   cur_comment varchar(255) NOT NULL,
   cur_user int(10) unsigned NOT NULL,
   cur_user_text varchar(255) NOT NULL,
   cur_old_version mediumint(8) unsigned NOT NULL,
   cur_timestamp datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
   cur_minor_edit tinyint(4) NOT NULL,
   cur_restrictions varchar(255) NOT NULL,
   PRIMARY KEY (cur_id),
   UNIQUE cur_title (cur_title)
);


CREATE TABLE WIKI_old (
   old_id int(10) unsigned NOT NULL auto_increment,
   old_title varchar(255) NOT NULL,
   old_text text NOT NULL,
   old_comment varchar(255) NOT NULL,
   old_user int(10) unsigned NOT NULL,
   old_user_text varchar(255) NOT NULL,
   old_old_version int(10) unsigned NOT NULL,
   old_timestamp datetime DEFAULT '0000-00-00 00:00:00' NOT NULL,
   old_minor_edit tinyint(4) NOT NULL,
   PRIMARY KEY (old_id)
);

CREATE TABLE WIKI_user (
   user_id int(10) unsigned NOT NULL auto_increment,
   user_name varchar(255) NOT NULL,
   user_password varchar(255) NOT NULL,
   user_rights varchar(255) NOT NULL,
   PRIMARY KEY (user_id),
   UNIQUE user_name (user_name)
);

See also : Wikipedia PHP script