SOA, le guide de l'architecte du SI by Xavier Fournier-Morel, Pascal Grojean, Guillaume Plouin,

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

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Extra resources for SOA, le guide de l'architecte du SI

Sample text

Dans la suite, on désignera cette infrastructure par le vocable « plate-forme d’intégration ». 1 Inciter à la réutilisation Valoriser l’existant du SI Cette exigence est la traduction technique de la pérennisation des briques existantes du SI (cf. chapitre précédent). La plate-forme d’intégration du SI doit en tout premier lieu intégrer des interfaces vers les diverses typologies d’applications. Dans les Systèmes d’Informations un peu conséquents, on trouve un certain nombre de familles applicatives : • Applications métiers, très variables selon le secteur d’activité de l’entreprise.

Urbanisation et architecture SOA La standardisation technique passe par l’utilisation d’un vocabulaire spécifiant les formats et la structure des données échangées. Le meta-langage XML s’impose souvent pour ce faire, même si l’on peut tout à fait utiliser SOA sans XML (cf. ). La standardisation métier passe en revanche obligatoirement par la promulgation d’un langage décrivant la sémantique des données échangées. Certaines grammaires XML (RDF, OWL) vont aussi dans ce sens, même si d’autres conventions sont possibles.

En outre, il pourra s’avérer très utile, notamment en cas de multiples consommateurs d’un même service, de savoir distinguer : • les principaux statuts d’un service. Par exemple : « En Définition », « En Test » (ou « Bouchoné1 »), « En Production » (« ou Public ») et « En Retrait » (ou « Obscolete »); • les principaux rôles d’intervention et leurs taches associées à chaque évolution de statut : le responsable catalogue, le responsable solution métier2, le responsable conception, le responsable implémentation, le responsable exploitation, le responsable des services transverses, etc.

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