Merge branch 'release-build-synapse' of https://github.com/MicrosoftDocs/azure-docs-pr into release-build-synapse

Author: julieMSFT

articles/synapse-analytics/cosmos-db-integration/concept-cosmos-db-support.md

@@ -10,4 +10,4 @@ ms.author: jrasnick
 > This preview version is provided without a service level agreement, and it's not recommended for production workloads. Certain features might not be supported or might have constrained capabilities. 
 > For more information, see [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/).
 >
-> To access the preview features of Azure Synapse, request access [here](https://aka.ms/synapsepreview). Microsoft will triage all requests and respond as soon as possible.
+

articles/synapse-analytics/includes/note-preview.md

@@ -0,0 +1,59 @@
+---
+title: Connect to Synapse Link for Cosmos DB
+description: How to connect a Cosmos DB to a Synapse workspace with Synapse Link
+services: synapse-analytics 
+author: ArnoMicrosoft
+ms.service: synapse-analytics 
+ms.topic: quickstart
+ms.subservice: 
+ms.date: 04/21/2020
+ms.author: acomet
+ms.reviewer: jrasnick
+---
+
+# Connect to Synapse Link for Azure Cosmos DB
+
+This article describes how to access an Azure Cosmos DB database from Azure Synapse Analytics studio with Synapse Link. 
+
+## Prerequisites
+
+Before you connect an Azure Cosmos DB account to your workspace, there are a few things that you need.
+
+* Existing Azure Cosmos DB account or create a new account following this [quickstart](https://docs.microsoft.com/azure/cosmos-db/how-to-manage-database-account)
+* Existing Synapse workspace or create a new workspace following this [quickstart](https://docs.microsoft.com/azure/synapse-analytics/quickstart-create-workspace) 
+
+## Enable Azure Cosmos DB analytical store
+
+To run large-scale analytics into Azure Cosmos DB without impacting your operational performance, we recommend enabling  Synapse Link for Azure Cosmos DB which bring HTAP capability to a container and built-in support in Azure Synapse. Follow this quickstart to enable Synapse Link  for Cosmos DB containers.
+
+## Connect an Azure Cosmos DB database to a Synapse workspace 
+
+Connecting an Azure Cosmos DB database is done as linked service. A Cosmos DB linked service enables users to browse and explore data, read, and write from Synapse Spark or SQL into Azure Cosmos DB. 
+
+From the Data Object Explorer, you can directly connect an Azure Cosmos DB database by doing the following steps:
+1. Select ***+*** icon near Data
+2. Select **Connect to external data**
+3. Select the API that you want to connect to: SQL or MongoDB
+4. Select ***Continue***
+5. Name the linked service. The name will be displayed in the Object Explorer and used by Synapse run-times to connect to the database and containers. We recommend using a friendly name.
+6. Select the **Cosmos DB account name** and **database name**
+7. (Optional) If no region is specified, Synapse run-time operations will be routed toward the nearest region where the analytical store is enabled. However you can set manually which region you want your users to access Cosmos DB analytical store. Select **Additional connection properties** and then **New**. Under **Property Name**, write ***PreferredRegions*** and set the **Value** to the region you want (example: WestUS2, there is no space between words and number)
+8. Select ***Create***
+
+Azure Cosmos DB database are visible under the tab **Linked** in the Azure Cosmos DB section. You can differentiate an HTAP enabled Azure Cosmos DB container from an OLTP only container with the following icons:
+
+**Synapse container**:
+
+![HTAP container](./media/quickstart-connect-synapse-link-cosmosdb/htap-container.png)
+
+**OLTP only container**:
+
+![OLTP container](./media/quickstart-connect-synapse-link-cosmosdb/oltp-container.png)
+
+## Quickly interact with code-generated actions
+
+By right-clicking into a container, you have list of gestures that will trigger a Spark or SQL run-time. Writing into a container will happen through the Transactional Store of Azure Cosmos DB and will consume Request Units.  
+
+## Next steps
+
+* [Learn what is supported between Synapse and Azure Cosmos DB](./synapse-link/concept-synapse-link-cosmos-db-support.md)

articles/synapse-analytics/media/quickstart-connect-cosmos-db/htap-collection.png renamed to articles/synapse-analytics/media/quickstart-connect-synapse-link-cosmosdb/htap-container.png

@@ -15,23 +15,19 @@ ms.reviewer: igorstan
 # What is Azure Synapse Analytics (formerly SQL DW)?
 
 > [!NOTE] 
-> Try the latest Azure Synapse features such as workspaces, Spark, SQL on demand, and the integrated Synapse Studio experience 
-> by [requesting access to Azure Synapse (workspaces preview)](https://aka.ms/synapsepreview). 
->
 >Explore the [Azure Synapse (workspaces preview) documentation](../overview-what-is.md).
+>
 
 Azure Synapse is an analytics service that brings together enterprise data warehousing and Big Data analytics. It gives you the freedom to query data on your terms, using either serverless on-demand or provisioned resources—at scale. Azure Synapse brings these two worlds together with a unified experience to ingest, prepare, manage, and serve data for immediate BI and machine learning needs.
 
 Azure Synapse has four components:
 
 - Synapse SQL: Complete T-SQL based analytics – Generally Available
   - SQL pool (pay per DWU provisioned)
-  - SQL on-demand (pay per TB processed) – (Preview)
-- Spark: Deeply integrated Apache Spark (Preview)
-- Synapse Pipelines: Hybrid data integration (Preview)
-- Studio: Unified user experience.  (Preview)
-
-
+  - SQL on-demand (pay per TB processed) (preview)
+- Spark: Deeply integrated Apache Spark (preview)
+- Synapse Pipelines: Hybrid data integration (preview)
+- Studio: Unified user experience. (preview)
 
 ## Synapse SQL pool in Azure Synapse
 

articles/synapse-analytics/media/quickstart-connect-cosmos-db/oltp-collection.png renamed to articles/synapse-analytics/media/quickstart-connect-synapse-link-cosmosdb/oltp-container.png

@@ -0,0 +1,53 @@
+---
+title: Synapse Link for Cosmos DB supported features
+description: Understand the current list of actions supported by Synapse Link for Cosmos DB
+services: synapse-analytics 
+author: ArnoMicrosoft
+ms.service: synapse-analytics 
+ms.topic: quickstart
+ms.subservice: 
+ms.date: 04/21/2020
+ms.author: acomet
+ms.reviewer: jrasnick
+---
+
+# Synapse Link for Azure Cosmos DB supported features
+
+This article describes what functionalities are currently supported in Synapse Link for Azure Cosmos DB. 
+
+## Azure Synapse support
+
+Here is list of the currently supported features within Synapse Link for Cosmos DB. 
+
+| Category              | Description |Spark | SQL serverless |
+| :-------------------- | :----------------------------------------------------------- |:----------------------------------------------------------- | :----------------------------------------------------------- | :----------------------------------------------------------- |
+| **Run-time Support** |Support for read or write by Azure Synapse run-time| ✓ | [Contact Us](mailto:[email protected]?subject=[Enable%20Preview%20Feature]%20SQL%20serverless%20for%20Cosmos%20DB)|
+| **Cosmos DB API support** |API support as a Synapse Link| SQL / Mongo DB | SQL / Mongo DB |
+| **Object**  |Objects such as table that can be created, pointing directly to Azure Cosmos DB container| View, Table | View |
+| **Read**    |Read data from an Azure Cosmos DB container| OLTP / HTAP | HTAP |
+| **Write**   |Write data from run-time into an Azure Cosmos DB container| OLTP | n/a |
+
+Writing back into an Azure Cosmos DB container from Spark only happens through the transactional store of Azure Cosmos DB and will impact the transactional performance of Azure Cosmos DB by consuming Request Units. Data will be automatically replicated into the analytical store if analytical store is enabled at the database level.
+
+## Supported code-generated actions for Spark
+
+| Gesture              | Description |OLTP only container |HTAP container |
+| :-------------------- | :----------------------------------------------------------- |:----------------------------------------------------------- |:----------------------------------------------------------- |
+| **Load to DataFrame** |Load and read data into a Spark DataFrame |X| ✓ |
+| **Create Spark table** |Create a table pointing to an Azure Cosmos DB container|X| ✓ |
+| **Write DataFrame to container** |Write data into a container|✓| ✓ |
+| **Load streaming DataFrame from container** |Stream data using Azure Cosmos DB change feed|✓| ✓ |
+| **Write streaming DataFrame to container** |Stream data using Azure Cosmos DB change feed|✓| ✓ |
+
+
+
+## Supported code-generated actions for SQL serverless
+
+| Gesture              | Description |OLTP only container |HTAP container |
+| :-------------------- | :----------------------------------------------------------- |:----------------------------------------------------------- |:----------------------------------------------------------- |
+| **Select top 100** |Preview top 100 items from a container|X| ✓ |
+| **Create view** |Create a view to directly have BI access in a container through Synapse SQL|X| ✓ |
+
+## Next steps
+
+See the [Connect to Synapse Link for Azure Cosmos DB quickstart](../quickstart-connect-synapse-link-cosmos-db.md)

articles/synapse-analytics/quickstart-connect-cosmos-db.md

@@ -32,8 +32,8 @@
       href: ./sql-data-warehouse/quickstart-bulk-load-copy-tsql.md?toc=/azure/synapse-analytics/toc.json&bc=/azure/synapse-analytics/breadcrumb/toc.json
   - name: Use SQL on-demand
     href: quickstart-sql-on-demand.md
-  - name: Connect to Cosmos DB
-    href: quickstart-connect-cosmos-db.md
+  - name: Connect to Synapse Link for Cosmos DB
+    href: quickstart-connect-synapse-link-cosmos-db.md
 - name: Tutorials
   items:
   # - name: Get started
@@ -327,7 +327,7 @@
   - name: Synapse Link
     items:
     - name: Synapse Link supported features
-      href: ./cosmos-db-integration/concept-cosmos-db-support.md
+      href: ./synapse-link/concept-synapse-link-cosmos-db-support.md
   - name: Tools integration (AI, ETL, BI)
     items:
     - name: Troubleshoot Synapse Analytics Studio