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Viewing Quandl Data in RAD Studio Data Explorer

How to view Quandl data in RAD Studio Data Explorer using the CData FireDAC Components for Quandl.

Embarcadero RAD Studio provides a development environment for Delphi and C++Builder applications. With the CData FireDAC Components for Quandl, you gain access to live Quandl data within RAD Studio, abstracting the data into tables, views, and stored procedures that can be used to both retrieve and update Quandl data. This article will walk through connecting to Quandl using the Data Explorer.

Connecting to Quandl Data Using Data Explorer

You can create a simple application for displaying Quandl data by utilizing the CData FireDAC Components for Quandl and a new VCL Forms Application:

  1. Open the Data Explorer in RAD Studio and expand FireDAC.
  2. Right-click on CData Quandl Data Source and click Add New Connection.

  3. Name the connection.
  4. Fill in the necessary connection parameters and click OK.

    Quandl は認証にAPI key を使用します。APIKey プロパティの取得については、ヘルプドキュメントを参照してください。

    さらに、DatabaseCode 接続プロパティを、SQL でクエリを実行するデータセットを持つデータベースを識別するコードに設定します。利用可能なデータベースは、データベースビューをクエリすることで検索できます。

  5. Back in the Data Explorer, expand the tables for the connection.
  6. Create a new VCL Forms application and drag a table (for example: AAPL) onto the form.

  7. Select the AAPLTable object on the form and set the Active property to true.
  8. Right-click on the object, bind visually, and link everything (*) to a new control (TStringGrid).

  9. Arrange the TStringGrid on the form and run the application to see the AAPL data.

 
 
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