Assigning a data class
Data classification helps you to detect, understand and classify the nature and purpose of the elements contained in the data sources imported in your catalog.
Assigning a data class allows you to categorize and operate on objects which have the same data class.
Talend Data Catalog provides
several types of data classes:
You can tag objects manually such as columns in a database or fields in a file
with a data class. Talend Data Catalog can also suggest you a data class
assignment.- Data-detected classes detect the nature of data automatically based on predefined enumeration, patterns and regular expressions. The data-detected classification uses the data sampling and profiling capability.
- Metadata-detected classes detect classes by metadata attributes. They help you to detect data that cannot be identified with the data-detected classification, such as date of birth which do not have unique data patterns. The metadata-detected classification is powered by the MQL capability.
- Compound classes are based on multiple metadata-detected and data-detected classes.
Before you begin
- You have been assigned an object role with the Data Classification Editing capability.
- Optionally, the data sampling and profiling have been enabled and configured during the metadata import.