Supported data sources

Ways to connect to your data

The way that you connect to your data depends on several factors, including the services that are installed on Cloud Pak for Data. Some services can use connections that are defined at the platform-level, while other services use connections that are specific to the service.

Use the following list to determine which method is appropriate for your use case.

Creating connections at the platform level

In general, platform-level connections simplify the process of creating and maintaining connections. You create the connection and then multiple services can refer to the connection. If you update the connection, the changes are automatically picked up by the projects that use the connection.

You can create platform-level connections from the Platform connections page. These connections can be used by various services across the platform. However, the Platform connections page is available only if the Cloud Pak for Data common core services are installed.

For more information, see Connecting to data sources at the platform level.

Consider creating connections at the platform level if the following statements are true:

• The services support platform-level connections.
• The same connection needs to be used by multiple services or instances or across multiple projects.
• You have the appropriate permissions to create platform-level connections.

  You must have the Editor or Admin role on the Platform connections page. For more information, see Managing collaborators on platform connections.

Platform connections are visible to all platform users. However, only users with the credentials for the data source can use the connection.

If you don't see the type of data source that you want to connect to, a Cloud Pak for Data administrator can upload the JDBC driver JAR files so that you can create a generic JDBC connection to the data source. For more information, see Importing JDBC drivers for data sources.

Not all services support the same types of connections. If you want to use a connection from the Platform connections catalog, the list of connections is filtered based on the types of connections that the service supports. For example, if you are using a connection to add a data source to a project, only connections that are supported for projects are displayed.

Creating connections at the service level

Create connections at the service level, if any of the following statements are true:

• The service that you are using does not support platform-level connections.
• You don't have the appropriate permissions to create platform-level connections.
• You don't want the connection to be included in the Connections catalog for security reasons.

For more information, see Connecting to data sources at the service level.

Connectors

The following table lists the data sources that you can connect to from Cloud Pak for Data.

Other data sources

An administrator can upload JDBC drivers to enable connections to more data sources. See Importing JBDC drivers for data sources.

The Watson Query service supports connections that are established by using third-party JDBC drivers.

Data files

In addition to using data from remote data sources or integrated databases, you can use data from files. You can work with data from the following types of files.

Connecting to data sources (by service)

Use the following resources to create connections in your application.

Cognos Dashboards

You can use CSV files, Microsoft Excel spreadsheets, connected data assets, and Watson Query assets as data sources for a dashboard. You must add all of these data sources to a project before you can use them as data sources.

Add data sources to a dashboard by clicking the Add a source (+) button in the Selected sources pane.

For more information, see Supported data sources for Cognos Dashboards.

Data Refinery

You can cleanse and refine tabular data with a graphical flow editor tool called Data Refinery. To refine data, you must add connections to your data sources and you must understand source file limitations. For more information, see Refining data (Data Refinery) and Supported data sources for Data Refinery.

DataStage

DataStage uses connectors on the DataStage canvas to work with remote data sources. To connect to the data source, you need to create a connection asset for the associated DataStage connector before you can use it in DataStage.

• For instructions on connecting to a remote data source in DataStage, see Connecting to a data source in DataStage.
• For the list of available DataStage connectors, see Supported data sources in DataStage.
• To add a local file such as a CSV file, see Adding data to a project.

SPSS Modeler

Data sources in the SPSS Modeler service support read-only access, read/write access, and SQL pushback.

The SPSS Modeler service also supports several other file types.

For more information, see Supported data sources for SPSS Modeler.

Watson Knowledge Catalog

You can create connections that can be used in the catalog or in projects and connections that can be used to curate data. In general, you can create connections from the Platform connections page. In addition, you can create connections as follows:

• Connections that can be used in a catalog from the catalog Assets page. For more information, see Adding a connection asset to a catalog (Watson Knowledge Catalog).
• Connections that can be used in projects from the Assets page of the project. For more information, see Adding data to an project.
• Connections that can be used for metadata import in projects when you create the metadata import asset. For more information, see Managing metadata imports.

Watson Query

You can create connections that can be used to virtualize data from the following locations:

• The Platform connections page
• The Data sources page in the Watson Query service.

For more information, see Adding data sources (Watson Query).

Watson Studio

Ideally, use data that is already in a catalog. Search for the data you want in a catalog and add it to a project.

Alternatively, you can create connections that can be used in projects from the following locations:

• The Connections page
• The Assets page of the project

You can also add data from files. To add data from files, go to the Assets page of the project.

For more information, see Adding data to an project.

Learn more

• Planning to access data
• Asset previews
• Profiles of assets