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Mapping Unified Attributes

The Schema Mapping page displays all attributes from your input datasets, and allows you to map them to the attributes in the unified schema.

Creating a Unified Dataset

To create a unified dataset:

  1. Select the Schema Mapping page. The left side of the page displays all of the input attributes from each uploaded dataset. The right side lists attributes in the unified dataset as you create them. Tamr Core uses the following default name for the unified dataset: [project name]_unified_dataset.
  2. (Optional) Edit the unified dataset's name in the text box.
  3. Choose Create Unified Dataset. The screen changes to show that there are no unified attributes. Now, you can begin adding them and building your unified schema.

Naming Unified Attributes

Unified attributes must have names that conform to the following requirements:

  • Names cannot contain the . (period) character.
  • Names must be unique: they cannot match (case-insensitively) any other unified attribute in your project.
  • Names cannot be empty, and cannot contain a leading or trailing whitespace.
  • Names cannot match (case-insensitively) the reserved, system-generated attribute names. See Understanding Tamr-Generated Data Attributes.

If you do use one of these names for an attribute, you receive the error message "This name is reserved by the system."

As a best practice, use a consistent style for your attribute names. For example, always use "camelCase" or "snake_case".

Creating a Unified Attribute

You can create unified attributes manually, or use the "bootstrap" feature to create unified attributes from specified input attributes.

To create a unified attribute manually:

  1. On the right side of the Schema Mapping page select Create.
  2. Enter a unique identifying name. See Naming Unified Attributes.
  3. (Optional) Enter a description for the attribute.
  4. Select Create.
Creating a unified attribute.Creating a unified attribute.

Creating a unified attribute.

To bootstrap unified attributes from input attributes:

  1. On the left side of the Schema Mapping page, use Ctrl+Select or Cmd+Select to select one or more unmapped attributes.
  2. Choose Bootstrap. Tamr Core launches the attribute bootstrapping process to create unified attributes and map the selected input attributes to them. See Approaches to Creating a Unified Schema.
Bootstrapping attributes.Bootstrapping attributes.

Bootstrapping attributes.

Mapping Attributes Manually

After you create unified attributes you can map input attributes to them one at a time by dragging them onto the desired unified attribute.

Mapping attributes using drag and drop.Mapping attributes using drag and drop.

Mapping attributes using drag and drop.

Tip: Use the Unmapped checkbox at the top of the list of input attributes to show only unmapped attributes.

You can map multiple input attributes by using Ctrl+Select (Cmd+Select) or Shift+Select.

If there is an input attribute that you choose not to map, select it and then choose Do not map from the Map dropdown menu.

Mapping options for input attributes.Mapping options for input attributes.

Mapping options for input attributes.

After you map a few attributes manually, you can leverage the machine learning model to suggest additional attribute mappings.

Changing the Input Attributes Mapped to a Unified Attribute

If an input attribute is incorrectly mapped to a unified attribute, move your cursor over the count of attributes in the Mappings column for the unified attribute to see a list of mapped input attributes. Find the incorrectly mapped attribute in the list and select Unmap.

Unmapping a source attribute from a unified attribute.Unmapping a source attribute from a unified attribute.

Unmapping a source attribute from a unified attribute.

You can also unmap input attributes from the Mappings column in the left side. Move your cursor over the name of the unified attribute to show a popup. Within the popup, move your cursor over the name of the unified attribute to reveal the Unmap option.

Unmapping an input attribute.Unmapping an input attribute.

Unmapping an input attribute.

Filtering to Mapped Attributes

You can filter to the set of source attributes that are mapped to a unified attribute by selecting View all mappings.

Filtering to mapped source attributes.Filtering to mapped source attributes.

Filtering to mapped source attributes.

Changing How a Unified Attribute Is Sorted

When you view unified data in tables on subsequent pages of the project, you can sort records by attribute value. By default, Tamr Core assigns a sort value of alphabetical to every unified attribute.

To change the sort value, to the right of the unified attribute, choose More More tricolon iconMore tricolon icon and then choose Alphabetically or Numerically.

Deleting a Unified Attribute

To delete a unified attribute, select it and choose Remove.

Updating a Unified Dataset

To save your work and apply your changes and additions, you update the unified dataset.

To update a unified dataset:

  1. Navigate to the Schema Mapping page.
  2. Choose Update Unified Dataset.

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