Add Azure SQL DB difference section

Author: Clare Zheng (Shanghai Wicresoft Co Ltd)

articles/data-factory/connector-azure-sql-database.md

@@ -8,7 +8,7 @@ ms.service: data-factory
 ms.subservice: data-movement
 ms.topic: conceptual
 ms.custom: synapse
-ms.date: 05/06/2024
+ms.date: 06/07/2024
 ---
 
 # Copy and transform data in Azure SQL Database by using Azure Data Factory or Azure Synapse Analytics
@@ -1091,6 +1091,18 @@ derivedColumn1 sink(allowSchemaDrift: true,
 
 To upgrade the Azure SQL Database version, in **Edit linked service** page, select **Recommended** under **Version** and configure the linked service by referring to [Linked service properties for the recommended version](#recommended-version).
 
+## Differences between the recommended and the legacy version
+
+The table below shows the differences between Azure SQL Database using the recommended and the legacy version.
+
+| Recommended version | Legacy version | 
+|:--- |:--- |
+| Using the property bag as the app model. | Using the ADO .NET connection string as the app model. | 
+| Support the connection string parser to parse ADO .NET to app models. | Support directly passing ADO .NET connection strings with AKV. | 
+| Support TLS 1.3 via `encrypt` as `strict`. | TLS 1.3 is not supported.| 
+| Provide better error messages.<br> Error message example: `The given value{0} of type {1} from the data source cannot be converted to type {2} for Column {3} [{4}].` | Error message example: `The given value{0} of type {1} from the data source cannot be converted to type {2} for the specified target column.` | 
+| Provide better supportability. |  / | 
+
 ## Related content
 
 For a list of data stores supported as sources and sinks by the copy activity, see [Supported data stores and formats](copy-activity-overview.md#supported-data-stores-and-formats).