MySQL Current timestamp in rubriques table

Hi all,

I am using spip 1.8.2d. Whenever I view the website (rubriques), « MAJ » field in spip_rubriques is updated with current date and time.

I would like to know why MAJ field is updated in MySQL, while viewing the page itself.

Thanks in advance,
Iswaria

CREATE TABLE spip_rubriques (
id_rubrique bigint(21) NOT NULL auto_increment,
id_parent bigint(21) NOT NULL default ‹ 0 ›,
titre text NOT NULL,
descriptif text NOT NULL,
texte longblob NOT NULL,
id_secteur bigint(21) NOT NULL default ‹ 0 ›,
maj timestamp NOT NULL default CURRENT_TIMESTAMP on update CURRENT_TIMESTAMP,
export varchar(10) default ‹ oui ›,
id_import bigint(20) default ‹ 0 ›,
statut varchar(10) NOT NULL default ‹  ›,
date datetime NOT NULL default ‹ 0000-00-00 00:00:00 ›,
lang varchar(10) NOT NULL default ‹  ›,
langue_choisie char(3) default ‹ non ›,
idx enum(’’,‹ 1 ›,‹ non ›,‹ oui ›,‹ idx ›) NOT NULL default ‹  ›,
extra longblob,
url_propre varchar(255) NOT NULL default ‹  ›,
statut_tmp varchar(10) NOT NULL default ‹  ›,
date_tmp datetime NOT NULL default ‹ 0000-00-00 00:00:00 ›,
PRIMARY KEY (id_rubrique),
KEY lang (lang),
KEY idx (idx),
KEY id_parent (id_parent),
KEY url_propre (url_propre)
) ENGINE=MyISAM DEFAULT CHARSET=latin1 AUTO_INCREMENT=59 ;