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How-to: Clone a lake database

  • Artikkeli

In this article, you'll learn how to clone an existing lake database in Azure Synapse using the database designer. The database designer allows you to easily create and deploy a database without writing any code.

Prerequisites

  • Synapse Administrator, or Synapse Contributor permissions are required on the Synapse workspace for creating a lake database.

Clone database

  1. From your Azure Synapse Analytics workspace Home hub, select the Data tab on the left. The Data tab will open. You'll see the list of databases that already exist in your workspace.

  2. Hover over the Databases section and select the ellipsis ... next to the database you want to clone, then choose Clone.

    Screenshot showing how to clone an existing database

  3. The database designer tab will open with a copy of the selected database loaded on the canvas.

  4. The database designer opens the Properties pane by default. Update the details for this cloned lake database. Screenshot showing the cloned database in the designer

    • Name Provide a new name for this database. Note that this name cannot be changed once the lake database is published.
    • Description Give your database a description (optional).
    • Storage settings for database provide the default storage information for tables in the database. The default settings are applied to each table in the database unless it's overridden on the table itself.
    • Linked service provide the default linked service used to store your data in Azure Data Lake Storage. The default linked service associated with the Synapse workspace will be shown, but you can change the Linked Service to any ADLS storage account you like.
    • Input folder set the default container and folder path within that linked service using the file browser or manually editing the path with the pencil icon.
    • Data format select the data format. Lake databases in Azure Synapse support parquet and delimited text as the storage formats for data.

  5. You can add additional tables to this cloned database by selecting the + Table button. For more information, see Modify lake database.

  6. Once you have completed all the changes to your cloned database, it's now time to publish it. If you're using Git integration with your Synapse workspace, you must commit your changes and merge them into the collaboration branch. Learn more about source control in Azure Synapse. If you're using Synapse Live mode, you can select "publish".

Clone tables within a lake database

The database designer allows you to clone any of the tables in your database.

  1. Select a table within your lake database and click on the ellipsis ... next to the table name.

  2. Click Clone.

    Screenshot showing how to clone a table

  3. The database designer will create a copy of the table and opens the General tab by default.

    Screenshot showing the cloned table in the designer

  4. Update the Name, Description and Storage settings for table as needed. For more information, see Modify lake database.

  5. Similarly update the Columns tab and Relationships tab as needed.

  6. Once you have completed all the changes to your cloned database, it's now time to publish it. If you're using Git integration with your Synapse workspace, you must commit your changes and merge them into the collaboration branch. Learn more about source control in Azure Synapse. If you're using Synapse Live mode, you can select "publish".

Next steps

Continue to explore the capabilities of the database designer using the links below.