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Modélisation (semaine du 31-01-2022)

TD

[ TD Modélisation]

TME

Le but est  de créer le schéma multidimensionnel de l&#039;exercice Achat et de formuler quelques requêtes simples pour interroger le data-warehouse.
On utilisera le SGBD relationnel  H2 (consulter</description>
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        <title>TME1</title>
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création du schéma du datawarehouse du TD (exercice achats)


/*dimension produits*/
CREATE or Replace view Produits as
SELECT NUMP, NOMP, &#039;unknown&#039; as CATPROD
FROM PRODUIT
union
SELECT CODEPROD, DESCPROD , CATPROD 
FROM PRODACHATS ;

/*dimension dates*/
create  or Replace  VIEW calendar as
SELECT DAY_OF_YEAR (DATEACHAT) as codeDate,   DATEACHAT, WEEK (DATEACHAT) as WEEK, MONTH(DATEACHAT) as MONTH
FROM  ACHAT 
union
SELECT DAY_OF_YEAR (DATEACHAT) as codeDate,   DATEACHAT, WEEK (DATEACHAT) …</description>
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