Build a Simple VCL Application for Azure Data Catalog Data

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Azure Data Catalog FireDAC Components

Rapidly create and deploy powerful Delphi & C++Builder Apps that integrate with Azure Data Catalog.



How to build a simple VCL Application to view Azure Data Catalog data in RAD Studio using the CData FireDAC Components for Azure Data Catalog.

Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData FireDAC Components for Azure Data Catalog, you gain access to live Azure Data Catalog data within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to retrieve Azure Data Catalog data. This article will walk through connecting to Azure Data Catalog and creating a simple VCL application with the Form Designer.

Creating a VCL Application for Azure Data Catalog Data

The following instructions show how to use the Form Designer to create a simple VCL Forms application that shows the basic FireDAC objects needed to connect to Azure Data Catalog from any application.

The following example populates a TDBGrid control.

  1. Create a new VCL Forms Application.
  2. Drop a TFDPhysAzureDataCatalogDriverLink and TFDConnection object onto the form.
  3. Double-click the TFDConnection object. The FireDAC Connection Editor is displayed. Select "CData.AzureDataCatalog" in the DriverId menu and configure the connection properties.

    You can optionally set the following to read the different catalog data returned from Azure Data Catalog.

      CatalogName: Set this to the CatalogName associated with your Azure Data Catalog. To get your Catalog name, navigate to your Azure Portal home page > Data Catalog > Catalog Name

    Connect Using OAuth Authentication

    You must use OAuth to authenticate with Azure Data Catalog. OAuth requires the authenticating user to interact with Azure Data Catalog using the browser. For more information, refer to the OAuth section in the help documentation.

  4. Drop a TFDQuery object onto the form and set the properties below:

    • Connection - Set this property to the TFDConnection object, if this object is not already specified.
    • SQL - Click the button in the SQL property and enter a query.
    • Active - Set this property to true.
  5. Drop a TDataSource object onto the form and set the following property:

    • DataSet - In the menu for this property, select the name of the TFDQuery object.
  6. Drop a TDBGrid control onto the form and set the following property:

    • DataSource - Select the name of the TDataSource.
  7. Drop a TFDGUIxWaitCursor onto the form. This is required to avoid a run-time error.

You now have an executable application that displays the results of the SQL Query set in the TFDQuery object.