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Connect to Presto Data from PowerBuilder
This article demonstrates how to use the CData ODBC Driver for Presto to connect to Presto data and execute queries in PowerBuilder.
The CData ODBC Driver for Presto can be used from any platform or development technology that supports ODBC, including PowerBuilder. This article shows how to connect to Presto data and execute queries from the Database Painter and controls such as the DataWindow.
Connect to Presto as an ODBC Data Source
If you have not already, first specify connection properties in an ODBC DSN (data source name). This is the last step of the driver installation. You can use the Microsoft ODBC Data Source Administrator to create and configure ODBC DSNs.
Set the Server and Port connection properties to connect, in addition to any authentication properties that may be required.
To enable TLS/SSL, set UseSSL to true.
Authenticating with LDAP
In order to authenticate with LDAP, set the following connection properties:
- AuthScheme: Set this to LDAP.
- User: The username being authenticated with in LDAP.
- Password: The password associated with the User you are authenticating against LDAP with.
Authenticating with Kerberos
In order to authenticate with KERBEROS, set the following connection properties:
- AuthScheme: Set this to KERBEROS.
- KerberosKDC: The Kerberos Key Distribution Center (KDC) service used to authenticate the user.
- KerberosRealm: The Kerberos Realm used to authenticate the user with.
- KerberosSPN: The Service Principal Name for the Kerberos Domain Controller.
- KerberosKeytabFile: The Keytab file containing your pairs of Kerberos principals and encrypted keys.
- User: The user who is authenticating to Kerberos.
- Password: The password used to authenticate to Kerberos.
Create a Profile for the ODBC Driver for Presto
Follow the steps below to use the Database Painter tool to create a database profile based on an ODBC DSN (data source name) for Presto. In the Database Painter, you can use wizards and the UI to work with Presto data.
- In PowerBuilder, click Tools -> Database Painter.
- In the Objects window in the Database Painter, right-click the ODBC node and click New Profile.
- On the Connection tab, enter a name for the profile and select the Presto DSN in the Data Source menu.
![]( "The ODBC DSN, required to create the Database Profile. (Salesforce is shown.)")
- To view and modify a table, right-click a table and then click Edit Data -> Grid.
Using Presto Data with PowerBuilder Controls
You can use standard PowerBuilder objects to connect to ODBC data sources and execute queries. The following example shows how to retrieve Presto data into a DataWindow. You can add the following code to the open method:
SQLCA.DBMS = "ODBC"
SQLCA.DBParm = "ConnectString='DSN=CData Presto Source'"
CONNECT USING SQLCA;
dw_customer.SetTransObject(SQLCA);
dw_customer.Retrieve();
Ready to get started?
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Presto ODBC Driver
The Presto ODBC Driver is a powerful tool that allows you to connect with live data from Presto, directly from any applications that support ODBC connectivity.
Access Presto data like you would a database - read, write, and update Presto Tables, etc. through a standard ODBC Driver interface.
