Tamr Documentation

Working with 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-hand side of the page displays all of the input attributes from each uploaded dataset. The right-hand side lists attributes in the unified dataset as you create them. Tamr uses the following default name for the unified dataset: [project name]_unified_dataset.
  2. Optionally, edit the unified dataset's name in the text box or leave the default.
  3. Choose Create Unified Dataset. The screen changes to show that there are no unified attributes. 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, Tamr-generated attribute names (see Understanding Tamr-Generated Data Attributes).

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

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 Tamr "bootstrap" feature to create unified attributes from specified input attributes.

To create a unified attribute manually

  1. On the right-hand side of the Schema Mapping page select Create.
  2. Enter a unique identifying name. See Naming Unified Attributes.
  3. Optionally, enter a description for the attribute.
  4. Select Create.
Creating a Unified AttributeCreating 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+click or Cmd+click to select one or more unmapped attributes.
  2. Choose Bootstrap. Tamr 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 attributesBootstrapping attributes

Bootstrapping attributes

Mapping Attributes Manually

After you create unified attributes you can map input attributes to them one at a time by dragging and dropping them.

Mapping attributes using drag and dropMapping attributes using drag and drop

Mapping attributes using drag and drop

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

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

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

Mapping options for input attributesMapping options for input attributes

Mapping options for input attributes

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

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 attributeUnmapping a source attribute from a unified attribute

Unmapping a source attribute from a unified attribute

You can also unmap input attributes from Mappings column in the left-hand panel. 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 attributeUnmapping 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 attributesFiltering 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 assigns a sort value of alphabetical to every unified attribute.

To change the sort value, choose the More menu (⁝ tricolon icon) to the right of the unified attribute 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 tab of any project.
  2. Choose Update Unified Dataset.

Updated 4 months ago



Working with 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.

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