Build a Simple VCL Application for IBM Informix Data

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IBM Informix FireDAC Components

Rapidly create and deploy powerful Delphi & C++Builder Apps that integrate with IBM Informix.

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How to build a simple VCL Application to view IBM Informix data in RAD Studio using the CData FireDAC Components for IBM Informix.

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

Creating a VCL Application for IBM Informix 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 IBM Informix from any application.

The following example populates a TDBGrid control.

  1. Create a new VCL Forms Application.
  2. Drop a TFDPhysInformixDriverLink and TFDConnection object onto the form.

  3. Double-click the TFDConnection object. The FireDAC Connection Editor is displayed. Select "CData.Informix" in the DriverId menu and configure the connection properties.

    Set the following properties to connect to IBM Informix

    • Server: Set this to the name of the server running IBM Informix.
    • Port: Set this to the port the IBM Informix server is listening on.
    • Database: Set this to the name of the IBM Informix database.
    • User: Set this to the username of a user allowed to access the database.
    • Password: Set this to the password of a user allowed to access the database.

  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.