# Configuring a data-detected class
## Before you begin
You have been assigned a global role with the Application Administration capability.
## Procedure
1. Go to MANAGE > Data Classes.
2. Click the data class to configure its properties.
| Field | Description |
| --- | --- |
| Enable/Disable | Select Enable to include this data class in the next
data classification operation.
Select Disable to not include this data class in the
next data classification operation.
Information noteNote: Even though a data class is
disabled, it may still be manually assigned and unassigned from an
imported object. |
| Name | Type in the name of the data class. |
| Description | Type in a description. |
| Classification groups | Select one or more classification groups for this data class.
You can
classify the data of a model by group. |
| Term | Select a glossary term to associate it to any object classified with this
data class.
The term provides information such as the name and description, when tracing
the semantic definition from any object associated with the data class.
You can also obtain the list of all the objects associated with this data
class when tracing the semantic usage from the term. |
| Default sensitivity | Select a sensitivity label to assign it to any object classified with this
data class.
The sensitivity label assignment can control the display of data profiling
and sampling information on the object pages. By default, you can
see the information when you have an assigned object role with the data
viewing capability. If a sensitivity label with the Hide
Data option enabled is assigned, you cannot see the
information as a data viewer. |
| Auto learning | Enabling this option allows the data class to be auto-populated with a
pattern based on existing imported objects. |
| Matching threshold (%) | Enter a value to specify the minimum percentage of values matching any of
the enumeration values, patterns or regular expression among all values (of
that field/column). |
| Uniqueness threshold | Enter a value to specify the minimum number of unique values among all
values (of that field/column) to require enough diversity for the dataset.
By
default, the value is set to 6 on patterns and
regular expressions.
By default, the value is set to
1 on enumerations and limited to the maximum
number of possible values in the enumeration list. If the number of the
possible values is less than the one specified in the Uniqueness
threshold field, Talend Data Catalog still uses
the maximum number of possible values as the value for the
Uniqueness threshold field.
Information noteNote:
If you use an "International" enumeration data class including values in
different languages and you have a column that uses one or more values of
this data class in only one language, Talend Data Catalog will
match it with confidence less than 100% because of other languages.
It is recommended to use "International" data classes only when you have
multilingual columns. In other case, you should define a data class for
each language used and group them in an "International" compound data
class. |
| Data pattern | Select the type:
- Enumeration: list of valid values for the data of that data class.
- Pattern: patterns for the data of that data class.
- Regular Expression: expression syntax that the data should conform to for that data class.
|
| Possible Values
Data patterns
Regular expression | Enter the list of possible values, the data patterns or the regular
expression. |
3. Save your changes.