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Power BI Desktop de l'intérieur: Modélisation avancée, langage M, DAX, Power Query: bonnes pratiques, pièges silencieux et limites
Paperback
Publisher: Independently Published
Published: Jul 18 2025
Pages: 436
Weight: 2.21
Height: 0.89 Width: 8.50 Depth: 11.00
Language: French
Ce livre s'adresse aux professionnels exigeants qui souhaitent comprendre en profondeur Power BI Desktop, au-delà des tutoriels superficiels. Construit autour d'une démarche pédagogique progressive, il vous guide pas à pas dans les arcanes du moteur de données, du langage M, de Power Query, du modèle tabulaire et du langage DAX.
- Une immersion méthodique dans les fonctions avancées de Power BI Desktop.
- Une approche terrain, fondée sur des cas réels et les retours d'utilisateurs professionnels.
- Un regard critique sur les limites, les pièges invisibles et les bonnes pratiques concrètes.
- Une progression raisonnée à travers les concepts clés: Power Query, langage M, modélisation, types de relations, logique du moteur vertiPaq, performance, sécurité et langage DAX avancé.
Vous y trouverez notamment:
- Une présentation claire et sans jargon inutile des fondements de la Business Intelligence.
- Une analyse rigoureuse des types de relations (actives/inactives, un-à -plusieurs, plusieurs-à -plusieurs) et des impacts sur le modèle.
- Un chapitre complet sur la gestion des dates, des calendriers personnalisés, et des fonctions de Time Intelligence.
- Des explications approfondies sur les fonctions DAX essentielles (CALCULATE, FILTER, ALL, RELATED, SUMX, etc.) et leurs subtilités.
- Un passage en revue des erreurs silencieuses, des ralentissements imprévus, et des biais de raisonnement fréquents.
- Une mise en garde contre les automatismes de Power BI pouvant nuire à la robustesse de vos modèles (types de données implicites, champs calculés, transformations ambiguës).
- Des dizaines de cas d'usage expliqués, illustrés et analysés, basés sur des jeux de données fournis par l'auteur.
Cet ouvrage s'adresse à un public disposant d'une première expérience avec Power BI Desktop (au moins 6 mois), et souhaitant:
- Consolider sa compréhension des concepts fondamentaux souvent mal assimilés (relations, filtres, contextes, calculs implicites).
- Gagner en rigueur dans la création de modèles de données fiables et pérennes.
- Monter en compétence sur les fonctions DAX réellement utilisées en entreprise.
- Éviter les erreurs courantes commises par de nombreux utilisateurs non avertis.
Cet ouvrage constitue la prolongation directe du précédent livre de Baptiste W. CAPITONI, intitulé L'essentiel de Power BI Desktop & Power Query: Pour débutants et intermédiaires.
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