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By Xavier Fournier-Morel, Pascal Grojean, Guillaume Plouin, Cyril Rognon

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La plate-forme d’intégration devra offrir les garanties présentées dans l’encart précédent : • Notifier qu’un message est bien arrivé. • Notifier qu’une séquence de messages est arrivée dans le bon ordre. Gérer les transactions distribuées Rappel sur les transactions distribuées Le cadre des transactions distribuées est celui où l’on doit écrire des données dans un référentiel à partir de traitements concurrents et distribués. Ce type de transaction nécessite un middleware assurant la cohérence des accès en écriture : le moniteur transactionnel.

L’authentification peut être gérée de diverses manières : identifiant/mot de passe, générateur de mot de passe à usage unique, biométrie, etc. cependant, la manière la plus élégante d’authentifier un accédant est d’utiliser un certificat numérique au format X509. Le certificat est l’équivalent d’une carte d’identité dans le monde numérique : il permet de s’authentifier, mais aussi de signer numériquement des documents. Des certificats sont, par exemple, utilisés dans le cadre de la télé-déclaration des impôts sur Internet.

Ainsi, le SI devient très dépendant de l’éditeur de la solution. • Ils ne disposaient pas toujours de l’exhaustivité des connecteurs nécessaires à l’entreprise. • Ils proposaient une interface non personnalisable et ne prenaient pas en compte la diversité des accédants potentiels : collaborateurs, clients, fournisseurs, mais aussi processus B2B automatisés. 1. On désigne par ce terme les systèmes de transformation d’interface lourde en interface Web. 2 Un outillage au service des urbanistes ——————————————————————————————————————————————————— 17 Enfin les portails de première génération ne résolvaient pas la problématique du fonctionnement en silo : au contraire, ils l’encourageaient en proposant de contourner le problème par un système palliatif (cf.

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