Add Data Classification APIs

Author: karinazhou

docs/connect/ado-net/sql/data-classification.md

@@ -1,7 +1,7 @@
 ---
 title: "Data discovery and classification in SqlClient"
 description: "Describes how to check if a SQL Server database supports data classification and how to access data classification information through a SqlDataReader object."
-ms.date: "06/15/2020"
+ms.date: "11/23/2020"
 dev_langs: 
   - "csharp"
 ms.prod: sql
@@ -20,29 +20,71 @@ ms.reviewer:
 
 [Data Discovery & Classification](../../../relational-databases/security/sql-data-discovery-and-classification.md) is a set of advanced services for discovering, classifying, labeling & reporting the sensitive data in your databases. SqlClient provides an API exposing read-only Data Discovery and Classification information when the underlying source supports the feature. This information is accessed through SqlDataReader.
 
-Microsoft.Data.SqlClient v2.1.0 introduces support for Data Classification's `Sensitivity Rank` information. `Sensitivity Rank` is an identifier based on a predefined set of values, which define sensitivity rank. It can be used by other services like Advanced Threat Protection to detect anomalies based on their rank. The following new APIs are now available in Microsoft.Data.SqlClient namespace:
+Microsoft.Data.SqlClient v2.1.0 introduces support for Data Classification's `Sensitivity Rank` information. `Sensitivity Rank` is an identifier based on a predefined set of values, which define sensitivity rank. It can be used by other services like Advanced Threat Protection to detect anomalies based on their rank. The following Data Classification APIs are now available in Microsoft.Data.SqlClient.DataClassification namespace:
 
 ```csharp
-public class SensitivityClassification
+// New in Microsoft.Data.SqlClient v2.1.0
+public enum SensitivityRank
+{
+    NOT_DEFINED = -1,
+    NONE = 0,
+    LOW = 10,
+    MEDIUM = 20,
+    HIGH = 30,
+    CRITICAL = 40
+}
+
+public sealed class SensitivityClassification
 {
   // Returns the sensitivity rank for the query associated with the active 'SqlDataReader'.
+  // New in Microsoft.Data.SqlClient v2.1.0
   public SensitivityRank SensitivityRank;
+
+  // Returns the labels collection for this 'SensitivityClassification' Object
+  public ReadOnlyCollection<Label> Labels;
+
+  // Returns the information types collection for this 'SensitivityClassification' Object
+  public ReadOnlyCollection<InformationType> InformationTypes;
+
+  // Returns the column sensitivity for this 'SensitivityClassification' Object
+  public ReadOnlyCollection<ColumnSensitivity> ColumnSensitivities;
 }
 
-public class SensitivityProperty
+public sealed class SensitivityProperty
 {
   // Returns the sensitivity rank for this 'SensitivityProperty' Object
+  // New in Microsoft.Data.SqlClient v2.1.0
   public SensitivityRank SensitivityRank;
+
+  // Returns the label for this 'SensitivityProperty' Object
+  public Label Label;
+
+  // Returns the information type for this 'SensitivityProperty' Object
+  public InformationType InformationType;
 }
 
-public enum SensitivityRank
+public sealed class Label
 {
-    NOT_DEFINED = -1,
-    NONE = 0,
-    LOW = 10,
-    MEDIUM = 20,
-    HIGH = 30,
-    CRITICAL = 40
+  // Gets the name for this 'Label' object
+  public string Name;
+
+  // Gets the ID for this 'Label' object
+  public string Id;
+}
+
+public sealed class InformationType
+{
+  // Gets the name for this 'InformationType' object
+  public string Name;
+
+  // Gets the ID for this 'InformationType' object
+  public string Id;
+}
+
+public sealed class ColumnSensitivity
+{
+  // Returns the list of sensitivity properties as received from Server for this 'ColumnSensitivity' information      
+  public ReadOnlyCollection<SensitivityProperty> SensitivityProperties;
 }
 ```