Cancellare campi e tabelle dal database

29 Dec '12, 11:54 AM
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Salve a tutti,

Sto utilizzando W.R. con un database PostgreSQL 9 ed ho il seguente problema:

Quando devo aggiungere campi o tabelle dallo schema al database la funzione di sincronizzazione lavora perfettamente ma quando, invece, elimino delle entità o dei campi dallo schema questa operazione non si propaga sul database creando refusi che poi generano errori.

In questo momento l'unica operazione con la quale riesco ad ovviare al problema è la cancellazione dell'intero database ogni volta che effettuo una modifica al modello dei dati.

 
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Ciao,

il processo di sincronizzazione consente di allineare il Data Model con il database. La sincronizzazione prevede di:

  • esportare gli elementi del Data Model (es. un'entità) nel database
  • importare gli elementi già esistenti nel database (es. una tabella) nel Data Model.

Nel tuo caso, a seguito di una cancellazione di un'elemento nel Data Model (es. un'entità), la sincronizzazione individua la presenza di un elemento in più nel database rispetto al Data Model (es. la tabella precedentemente associata all'entità cancellata) e lo mostra in ingresso per l'importazione. Importando la tabella, Data Model e database saranno allineati. Se invece desideri rimuovere la tabella, occorre cancellarla manualmente sul database. Dopo la cancellazione, ripetendo la sincronizzazione non dovresti avere elementi da Importare/Esportare.

Per maggiori dettagli sulla sincronizzazione: The Data Model Mapping


Hello,

the synchronization process aligns the Data Model with the database. You can:

  • export the Data Model items (e.g. an entity) in the database
  • import the already existing elements of the database (e.g. a table) in the Data Model.

In your case, you delete an element in the Data Model (e.g. an entity); the synchronization finds the presence of one more element in database with respect to the Data Model (e.g. the table previously associated with the deleted entity) and shows this element for the import. If you decide to import the table, the Data Model and the database will be aligned. Instead, if you wish to remove the table you have to delete it manually on the database. After the deletion, if you repeat the synchronization you should not have any items to Import/Export.

For more details about the synchronization: The Data Model Mapping

   
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