Add Snowflake support

Author: linda33wj

articles/purview/media/register-scan-snowflake/register-sources.png

@@ -6,7 +6,7 @@ ms.author: jingwang
 ms.service: purview
 ms.subservice: purview-data-map
 ms.topic: conceptual
-ms.date: 11/05/2021
+ms.date: 11/19/2021
 ms.custom: ignite-fall-2021
 ---
 
@@ -37,6 +37,7 @@ Purview supports the following data stores. Select each data store to learn the
 || [MySQL](register-scan-mysql.md) | [Yes](register-scan-mysql.md#register) | No | [Yes](register-scan-mysql.md#scan) | No |
 || [Oracle](register-scan-oracle-source.md) | [Yes](register-scan-oracle-source.md#register)|  No | [Yes*](how-to-lineage-oracle.md) | No|
 || [PostgreSQL](register-scan-postgresql.md) | [Yes](register-scan-postgresql.md#register) | No | [Yes](register-scan-postgresql.md#scan) | No |
+|| [Snowflake](register-scan-snowflake.md) | [Yes](register-scan-snowflake.md#register) | No | [Yes](register-scan-snowflake.md#scan) | No |
 ||    [SQL Server](register-scan-on-premises-sql-server.md)| [Yes](register-scan-on-premises-sql-server.md#register) |[Yes](register-scan-on-premises-sql-server.md#scan) | No* | No|
 ||    [Teradata](register-scan-teradata-source.md)| [Yes](register-scan-teradata-source.md#register)|  No | [Yes*](how-to-lineage-teradata.md) | No|
 |File|[Amazon S3](register-scan-amazon-s3.md)|[Yes](register-scan-amazon-s3.md)| [Yes](register-scan-amazon-s3.md)| Limited* | No|

articles/purview/media/register-scan-snowflake/scan.png

@@ -79,6 +79,10 @@ Follow the steps below to scan Salesforce to automatically identify assets and c
 
 Azure Purview uses Salesforce REST API version 41.0 to extract metadata, including REST requests like 'Describe Global' URI (/v41.0/sobjects/),'sObject Basic Information' URI (/v41.0/sobjects/sObject/), and 'SOQL Query' URI (/v41.0/query?).
 
+### Authentication for a scan
+
+The supported authentication type for a Salesforce source is **Consumer key authentication**.
+
 ### Create and run scan
 
 To create and run a new scan, do the following:

articles/purview/purview-connector-overview.md

@@ -0,0 +1,139 @@
+---
+title: Connect to and manage Snowflake
+description: This guide describes how to connect to Snowflake in Azure Purview, and use Purview's features to scan and manage your Snowflake source.
+author: linda33wj
+ms.author: jingwang
+ms.service: purview
+ms.subservice: purview-data-map
+ms.topic: how-to #Required; leave this attribute/value as-is.
+ms.date: 11/19/2021
+ms.custom: template-how-to #Required; leave this attribute/value as-is.
+---
+
+# Connect to and manage Snowflake in Azure Purview (Preview)
+
+This article outlines how to register Snowflake, and how to authenticate and interact with Snowflake in Azure Purview. For more information about Azure Purview, read the [introductory article](overview.md).
+
+> [!IMPORTANT]
+> Snowflake as a source is currently in PREVIEW. The [Supplemental Terms of Use for Microsoft Azure Previews](https://azure.microsoft.com/support/legal/preview-supplemental-terms/) include additional legal terms that apply to Azure features that are in beta, preview, or otherwise not yet released into general availability.
+
+## Supported capabilities
+
+|**Metadata Extraction**|  **Full Scan**  |**Incremental Scan**|**Scoped Scan**|**Classification**|**Access Policy**|**Lineage**|
+|---|---|---|---|---|---|---|
+| [Yes](#register)| [Yes](#scan)| No | No | No | No| Yes|
+
+When scanning Snowflake, Purview supports:
+
+- Extract metadata including Snowflake servers, databases, schemas, tables, views, stored procedures, functions, pipes, stages, streams, tasks, sequences, and table/view/stream columns.
+- Fetch static lineage on assets relationships among tables, views and streams.
+
+## Prerequisites
+
+* An Azure account with an active subscription. [Create an account for free](https://azure.microsoft.com/free/?WT.mc_id=A261C142F).
+
+* An active [Purview resource](create-catalog-portal.md).
+
+* You will need to be a Data Source Administrator and Data Reader to register a source and manage it in the Purview Studio. See our [Azure Purview Permissions page](catalog-permissions.md) for details.
+
+* Set up the latest [self-hosted integration runtime](https://www.microsoft.com/download/details.aspx?id=39717). For more information, see [the create and configure a self-hosted integration runtime guide](../data-factory/create-self-hosted-integration-runtime.md).
+
+* Ensure [JDK 11](https://www.oracle.com/java/technologies/javase/jdk11-archive-downloads.html) is installed on the virtual machine where the self-hosted integration runtime is installed.
+
+* Ensure Visual C++ Redistributable for Visual Studio 2012 Update 4 is installed on the self-hosted integration runtime machine. If you don't have this update installed, [you can download it here](https://www.microsoft.com/download/details.aspx?id=30679).
+
+* The Snowflake user must have read access to system tables in order to access advanced metadata.
+
+## Register
+
+This section describes how to register Snowflake in Azure Purview using the [Purview Studio](https://web.purview.azure.com/).
+
+### Steps to register
+
+To register a new Snowflake source in your data catalog, do the following:
+
+1. Navigate to your Purview account in the [Purview Studio](https://web.purview.azure.com/resource/).
+1. Select **Data Map** on the left navigation.
+1. Select **Register**
+1. On Register sources, select **Snowflake**. Select **Continue**.
+
+On the **Register sources (Snowflake)** screen, do the following:
+
+1. Enter a **Name** that the data source will be listed within the Catalog.
+
+1. Enter the **server** URL used to connect to the Snowflake account, e.g. `xy12345.east-us-2.azure.snowflakecomputing.com`.
+
+1. Select a collection or create a new one (Optional)
+
+1. Finish to register the data source.
+
+    :::image type="content" source="media/register-scan-snowflake/register-sources.png" alt-text="register sources options" border="true":::
+
+## Scan
+
+Follow the steps below to scan Snowflake to automatically identify assets and classify your data. For more information about scanning in general, see our [introduction to scans and ingestion](concept-scans-and-ingestion.md).
+
+### Authentication for a scan
+
+The supported authentication type for a Snowflake source is **Basic authentication**.
+
+### Create and run scan
+
+To create and run a new scan, do the following:
+
+1. In the Management Center, select Integration runtimes. Make sure a self-hosted integration runtime is set up. If it is not set up, use the steps mentioned [here](./manage-integration-runtimes.md) to create a self-hosted integration runtime.
+
+1. Navigate to **Sources**.
+
+1. Select the registered Snowflake source.
+
+1. Select **+ New scan**.
+
+1. Provide the below details:
+
+    1. **Name**: The name of the scan
+
+    1. **Connect via integration runtime**: Select the configured
+        self-hosted integration runtime
+
+    1. **Credential**: Select the credential to connect to your data source. Make sure to:
+        * Select **Basic Authentication** while creating a credential.
+        * Provide the user name used to connect to Snowflake in the User name input field.
+        * Store the user password used to connect to Snowflake in the secret key.
+
+    1. **Warehouse**: Specify the name of the warehouse instance to use.
+
+    1. **Database**: Specify the name of the database instance to import.
+
+    1. **Schema**: List subset of schemas to import expressed as a semicolon separated list. For example, `schema1; schema2`. All user schemas are imported if that list is empty. All system schemas and objects are ignored by default.
+        
+        Acceptable schema name patterns using SQL LIKE expressions syntax include using %. For Example: `A%; %B; %C%; D`
+        * Start with A or
+        * End with B or
+        * Contain C or
+        * Equal D
+
+        Usage of NOT and special characters are not acceptable.
+
+    1. **Maximum memory available**: Maximum memory (in GB) available on customer's VM to be used by scanning processes. This is dependent on the size of Snowflake source to be scanned.
+
+        > [!Note]
+        > As a thumb rule, please provide 1GB memory for every 1000 tables
+
+        :::image type="content" source="media/register-scan-snowflake/scan.png" alt-text="scan Snowflake" border="true":::
+
+1. Select **Continue**.
+
+1. Choose your **scan trigger**. You can set up a schedule or ran the scan once.
+
+1. Review your scan and select **Save and Run**.
+
+[!INCLUDE [create and manage scans](includes/view-and-manage-scans.md)]
+
+## Next steps
+
+Now that you have registered your source, follow the below guides to learn more about Purview and your data.
+
+- [Data insights in Azure Purview](concept-insights.md)
+- [Lineage in Azure Purview](catalog-lineage-user-guide.md)
+- [Search Data Catalog](how-to-search-catalog.md)

articles/purview/register-scan-salesforce.md

@@ -155,6 +155,8 @@ items:
       href: register-scan-sapecc-source.md
     - name: SAP S/4HANA 
       href: register-scan-saps4hana-source.md
+    - name: Snowflake
+      href: register-scan-snowflake.md
     - name: Teradata 
       href: register-scan-teradata-source.md
     - name: Amazon RDS