If the data you want to access does not have a corresponding default data source, you can implement a custom data source extension and install it into CAS.

Data source extensions can access any type of data source that you want to include in CAS. For example, data source extensions might access flat files, databases, content management repositories (that do not already have a corresponding data source), and so on.

For details about creating and installing custom extensions to CAS, see the CAS Extension API Guide.