Data classes (Watson Knowledge Catalog)
Data classes describe the type of data contained in data assets, such as data fields or table columns, for example, city, account number, or credit card number. Watson Knowledge Catalog provides a set of predefined data classes.
When you create custom data-class artifacts, you can use matching data to specify how to classify data automatically. You can also add related artifacts like classifications and business terms. Such business terms are then suggested to be assigned when a data class is assigned to a column in a data asset.
In governed catalogs, data assets that contain tabular data are automatically profiled and assigned data classes. In ungoverned catalogs, you can choose to profile a relational data asset and choose which data classes to assign. All catalog users can see the data classes in the asset preview on the Overview and Profile pages of the asset.