Connect to Google Cloud Storage Data in DBVisualizer

The CData JDBC Driver for Google Cloud Storage implements JDBC standards to provide connectivity to Google Cloud Storage data in applications ranging from business intelligence tools to IDEs. This article shows how to establish a connection to Google Cloud Storage data in DBVisualizer and use the table editor to load Google Cloud Storage data.

Create a New JDBC Data Source for Google Cloud Storage Data

Follow the steps below to use the Driver Manager to provide connectivity to Google Cloud Storage data from DBVisualizer tools.

1. In DBVisualizer, click Tools -> Driver Manager -> Create a New Driver.
2. Enter a name for the data source.
3. Enter the following in the URL Format box: jdbc:googlecloudstorage:
   The DBVisualizer Driver Manager.
4. In the User Specified tab, click the Open File button and select the cdata.jdbc.googlecloudstorage.jar file, located in the lib subfolder of the installation directory.
5. In the Driver Class menu, select the GoogleCloudStorageDriver class, cdata.jdbc.googlecloudstorage.GoogleCloudStorageDriver.

Define the Connection to the JDBC Data Source

Follow the steps below to save connection properties in the JDBC URL.

1. In the Database tab, right-click the Database Connection node and click Create a Database Connection.

2. In the Connection section, set the following options:

   • Database Type: If you selected the wizard option, the database type is automatically detected. If you selected the "No Wizard" option, select the Generic or Auto Detect option in the Database Type menu.
   • Driver: Select the driver you just created.

   • Database URL: Enter the full JDBC URL. The syntax of the JDBC URL is jdbc:googlecloudstorage: followed by the connection properties in a semicolon-separated list of name-value pairs.

     Authenticate with a User Account

     You can connect without setting any connection properties for your user credentials. After setting InitiateOAuth to GETANDREFRESH, you are ready to connect.

     When you connect, the Google Cloud Storage OAuth endpoint opens in your default browser. Log in and grant permissions, then the OAuth process completes

     Authenticate with a Service Account

     Service accounts have silent authentication, without user authentication in the browser. You can also use a service account to delegate enterprise-wide access scopes.

     You need to create an OAuth application in this flow. See the Help documentation for more information. After setting the following connection properties, you are ready to connect:

     • InitiateOAuth: Set this to GETANDREFRESH.
     • OAuthJWTCertType: Set this to "PFXFILE".
     • OAuthJWTCert: Set this to the path to the .p12 file you generated.
     • OAuthJWTCertPassword: Set this to the password of the .p12 file.
     • OAuthJWTCertSubject: Set this to "*" to pick the first certificate in the certificate store.
     • OAuthJWTIssuer: In the service accounts section, click Manage Service Accounts and set this field to the email address displayed in the service account Id field.
     • OAuthJWTSubject: Set this to your enterprise Id if your subject type is set to "enterprise" or your app user Id if your subject type is set to "user".
     • ProjectId: Set this to the Id of the project you want to connect to.

     The OAuth flow for a service account then completes.

     Built-in Connection String Designer

     For assistance in constructing the JDBC URL, use the connection string designer built into the Google Cloud Storage JDBC Driver. Either double-click the JAR file or execute the jar file from the command-line.

     java -jar cdata.jdbc.googlecloudstorage.jar

     Fill in the connection properties and copy the connection string to the clipboard.

     When you configure the JDBC URL, you may also want to set the Max Rows connection property. This will limit the number of rows returned, which is especially helpful for improving performance when designing reports and visualizations.

     A typical connection string is below:

     jdbc:googlecloudstorage:ProjectId='project1';InitiateOAuth=GETANDREFRESH
   • Database UserId: The username to use to authenticate to Google Cloud Storage.
   • Database Password: The password to use to authenticate to Google Cloud Storage.

3. On the Connection tab, click Connect.

To browse through tables exposed by the Google Cloud Storage JDBC Driver, right-click a table and click Open in New Tab.

To execute SQL queries, use the SQL Commander tool: Click SQL Commander -> New SQL Commander. Select the Database Connection, Database, and Schema from the available menus.

See the "Supported SQL" chapter in the help documentation for more information on the supported SQL. See the "Data Model" chapter for table-specific information.