Update how-to-access-data.md

added recommendation to use dataset

Author: MayMSFT

articles/machine-learning/service/how-to-access-data.md

@@ -145,7 +145,8 @@ The `target_path` parameter is the location of the local directory to download t
 <a name="train"></a>
 ## Access your data during training
 
-To access data during training, you can either download or mount your data from your Azure storage services to the compute target via datastores.
+> [!NOTE]
+> Azure machine learning dataset is the new way to access your data  in training. It provides you with the capabilities to load tabular data into pandas or spark DataFrame and the capabilities to download or mount files of any format from Azure Blob, Azure File, Azure Data Lake Gen 1, Azure Data Lake Gen 2, Azure SQL, Azure PostgreSQL. We recommend you to learn [how to train with datasets](how-to-train-with-datasets.md). 
 
 The following table lists the methods that tell the compute target how to use the datastores during runs.