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Create an Azure Synapse Analytics Data Source

Audience: Data Owners

Content Summary: This guide outlines the process of creating Azure Synapse Analytics data sources.

1 - Create a New Data Source

  1. Click the plus button in the top left of the Immuta console.
  2. Select New Data Source.

    New Data Source

Alternatively,

  1. Navigate to the My Data Sources page.
  2. Click the New Data Source button in the top right corner.

2 - Connect Azure Synapse Analytics Data

Best Practice: Connections Use SSL

Although not required, it is recommended that all connections use SSL. Additional connection string arguments may also be provided.

Note: Only Immuta uses the connection you provide and injects all policy controls when users query the system. In other words, users always connect through Immuta with policies enforced and have no direct association with this connection.

  1. Select the Azure Synapse Analytics tile in the Storage Technology section.

    Synapse Data Source

  2. Complete these fields in the Connection Information box:

    • Server: hostname or IP address
    • Port: port configured for Azure Synapse Analytics
    • SSL: when enabled, ensures communication between Immuta and the remote database is encrypted
    • Database: the remote database
    • Username: the username to use to connect to the remote database and retrieve records for this data source
    • Password: the password to use with the above username to connect to the remote database
  3. You can then choose to enter Additional Connection String Options or Upload Certificates to connect to the database.

  4. Click the Test Connection button.

    If the connection is successful, a check mark and successful connection notification will appear and you will be able to proceed. If an error occurs when attempting to connect, the error will be displayed in the UI. In order to proceed to the next step of data source creation, you must be able to connect to this data source using the connection information that you just entered.

    Successful Connection

Further Considerations

  • Immuta pushes down joins to be processed on the native database when possible. To ensure this happens, make sure the connection information matches between data sources, including host, port, ssl, username, and password. You will see performance degradation on joins against the same database if this information doesn't match.
  • If a client certificate is required to connect to the source database, you can add it in the Upload Certificates section at the bottom of the form.

3 - Select Virtual Population

  1. Decide how to virtually populate the data source by selecting Create sources for all tables in this database and monitor for changes, Schema/Table, or SQL Statement.

    Query-backed Virtual Population

  2. Complete the workflow for Create sources for all tables in this database and monitor for changes, Schema/Table, or SQL Statement selection, which are outlined on the tabs below:

    Create sources for all tables in this database and monitor for changes

    Selecting this option will create and keep in sync all data sources within this database. New schemas will be automatically detected and the corresponding data sources and schema projects will be created.

    Schema/Table

    Selecting this option will create and keep in sync all tables within the schema(s) selected. No new schemas will be detected.

    1. If you choose Schema/Table, click Edit in the table selection box that appears.
    2. By default, all schemas and tables are selected. Select and deselect by clicking the checkbox to the left of the name in the Import Schemas/Tables menu. You can create multiple data sources at one time by selecting an entire schema or multiple tables.

    3. After making your selection(s), click Apply.

      Multiple Data Sources

    SQL Statement

    Backing data sources with SQL statements allows SQL to build the data source, while the complexities of the statements and the specifics of the database remain hidden. Users just see a data source in Immuta.

    1. Before entering a SQL statement, test the statement to verify that it works.
    2. Enter your SQL statement in the text box.
    3. Click Validate Statement.

4 - Enter Basic Information

Provide information about your source to make it discoverable to users.

  1. Enter the SQL Schema Name Format to be the SQL name that the data source exists under in Immuta. It must include a schema macro but you may personalize it using lowercase letters, numbers, and underscores to personalize the format. It may have up to 255 characters.
  2. Enter the Schema Project Name Format to be the name of the schema project in the Immuta UI. This field is disabled if the schema project already exists within Immuta.

    1. When selecting Create sources for all tables in this database and monitor for changes you may personalize this field as you wish, but it must include a schema macro.
    2. When selecting Schema/Table this field is prepopulated with the recommended project name and you can edit freely.
  3. Select the Data Source Name Format, which will be the format of the name of the data source in the Immuta UI.

    <Tablename>

    The data source name will be the name of the remote table, and the case of the data source name will match the case of the macro.

    <Schema><Tablename>

    The data source name will be the name of the remote schema followed by the name of the remote table, and the case of the data source name will match the cases of the macros.

    Custom

    Enter a custom template for the Data Source Name. You may personalize this field as you wish, but it must include a tablename macro. The case of the macro will apply to the data source name (i.e., <Tablename> will result in "Data Source Name," <tablename> will result in "data source name," and <TABLENAME> will result in "DATA SOURCE NAME").

    Custom Schema Name

  4. Enter the SQL Table Name Format, which will be the format of the name of the table in Immuta. It must include a table name macro, but you may personalize the format using lowercase letters, numbers, and underscores. It may have up to 255 characters.

    Data Source Creation Basic Information

5 - Enable or Disable Schema Monitoring

When selecting the Schema/Table option, you can opt to enable Schema Monitoring by selecting the checkbox in this section.

Schema Monitoring

Note: This step will only appear if all tables within a server have been selected for creation.

6 - Opt to Configure Advanced Settings

Although not required, completing these steps will help maximize the utility of your data source. Otherwise, skip to the next step.

Column Detection

This setting monitors when remote tables' columns have been changed, updates the corresponding data sources in Immuta, and notifies Data Owners of these changes.

Column Detection

To enable, select the checkbox in this section.

See Schema Projects Overview to learn more about Column Detection.

Columns

This section allows you to decide which columns to include in the data source.

  1. Click the Edit button in the Columns section.
  2. By default, all columns are selected. De-select a column by clicking in the checkbox in the top left corner of that column.
  3. When necessary, convert column types by clicking the Type dropdown menu. Note that incorrectly converting a column type will break your data source at query time.
  4. Click Apply.

    Query-backed Select Columns

Further Considerations: Not Null Constraints

These constraints help Business Intelligence (BI) tools send better queries.

  • For SQL query-backed data sources, select Not NULL in the Nullable dropdown menu for any columns that have this constraint in the source database.

  • For table-backed data sources, this constraint is automatically detected.

Event Time

An Event Time column denotes the time associated with records returned from this data source. For example, if your data source contains news articles, the time that the article was published would be an appropriate Event Time column.

  1. Click the Edit button in the Event Time section.
  2. Select the column(s).
  3. Click Apply.

    Query-backed Event Time

Selecting an Event Time column will enable

Latency

  1. Click Edit in the Latency section.
  2. Complete the Set Time field, and then select MINUTES, HOURS, or DAYS from the subsequent dropdown menu.
  3. Click Apply.

This setting impacts the following behaviors:

  • How long Immuta waits to refresh data that is in cache by querying the native data source. For example, if you only load data once a day in the native source, this setting should be greater than 24 hours. If data is constantly loaded in the native source, you need to decide how much data latency is tolerable vs how much load you want on your data source; however this is only relevant to Immuta S3, since SQL will always interactively query the native database.
  • How often Immuta checks for new values in a column that is driving row-level redaction policies. For example, if you are redacting rows based on a country column in the data, and you add a new country, it will not be seen by the Immuta policy until this period expires.

Sensitive Data Discovery

Data Owners can disable Sensitive Data Discovery for their data sources in this section.

  1. Click Edit in this section.
  2. Select Enabled or Disabled in the window that appears, and then click Apply.

Data Source Tags

Adding tags to your data source allows users to search for the data source using the tags and Governors to apply Global policies to the data source. Note if Schema Detection is enabled, any tags added now will also be added to the tables that are detected.

To add tags,

  1. Click the Edit button in the Data Source Tags section.
  2. Begin typing in the Search by Tag Name box to select your tag, and then click Add.

Add Tag

Tags can also be added after you create your data source from the Data Source details page on the Overview tab or the Data Dictionary tab.

7 - Create the Data Source

Click Create to save the data source(s).

Create Data Source