Prepare the Data Catalog physical data layer for Tableau stitching

Before you can perform stitching, you have to prepare Tableau's logical data layer and Data Catalog's physical data layer. In this section, we describe how to prepare the physical data layer.

Prerequisites

• You have a global role with the Catalog global permission, for example, Catalog Author.
• You have a role with the following resource permissions on the Schema community:
  • Asset: add
  • Attribute: add
  • Domain: add
  • Attachment: add

Steps

1. Register a database as data source.
   After registration, the assets of the following asset types are created in Data Catalog:
   • Schema
   • Table
   • Column
2. Create a Database asset.
Tip We strongly recommend to use the name as your original data source, so that the name of the Database asset matches Tableau's naming convention.
1. Open the product for which you want to create an asset, for example, Business Glossary.
2. On the main toolbar, click .The Create dialog box appears.
3. Click the Assets tab, then click Database.
   The Create Asset dialog box appears.
4. Enter the required information.

   Field	Description
   Type	The asset type of the asset that you are creating.
   Domain	The domain to which the asset will belong. Tip Ensure that the domain type of the selected domain is assigned to the selected asset type.
   	A name to identify the asset. Asset names have a character limit of 2000 characters. Tip  You can simultaneously create multiple assets. To do so, after typing the name, press Enter, and then type the next name. Depending on the settings, asset names may need to be unique in their domain. If you enter a name that already exists, it appears in the strike-through style.

5. Click Create.
   A message stating that one or more assets are created appears in the upper-right corner of the page.
3. Create a relation between the Database asset and the Schema asset using the Technology Asset has / belongs to Schema relation type.
   1. In the tab pane, click Add characteristic.
      The Add a Characteristic dialog box appears.
   2. Click Relations.
   3. Search for and click has schema.
      The Add has schema dialog box appears.
   4. Enter the required information.
      

      Option	Description
      Assets	The name of the schema.
      Filter suggested assets by organization	Option to filter the suggestions based on selected communities and domains. If this option is selected, the organization tree appears. You can then filter and select domains and communities.
      Start date	Optionally enter the date on which the relation between the assets becomes applicable. Leave this field empty to create a permanent relation.
      End date	Optionally enter the date on which the relation between the assets is no longer applicable. Leave this field empty to create a permanent relation.

   5. Click Save.
4. Check that the following relations are created for all Column assets that you want to stitch to Tableau assets:
   • Schema contains / is part of Table
   • Column is part of / contains Table

What's next?

If you haven't done so yet, prepare the Tableau logical data layer.

After both the logical data layer and the physical data layer are prepared, you can stitch them.