# Semantics

{% hint style="info" %}
PDQ provides the ability to define semantic terms, tags, applications, dimensions, and fields which can be assigned to an asset, attribute, and rules to categorize the data accordingly. Once the semantics are defined the platform will auto-discover the data type and field type and will automatically apply them across the organization's data asset.
{% endhint %}

<figure><img src="/files/4zkjKKSL9htlFPoaNtuN" alt=""><figcaption><p>Sematics</p></figcaption></figure>

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{% tabs %}
{% tab title="Domains" %}
{% hint style="info" %}
A domain in a data catalog refers to a logical grouping or category of related data assets within an organization. It provides a way to organize and classify information based on business functions, subject areas, or departments. Domains help structure the data catalog, making it easier for users to navigate, discover, and understand relevant data assets.&#x20;

By grouping similar data together, domains improve data governance, enable more effective search and browsing, and facilitate the management of data ownership and access rights. This organizational structure is particularly useful in large enterprises with diverse data landscapes, allowing stakeholders to quickly locate and comprehend the data relevant to their specific area of interest or responsibility.

Under Semantics, the user can create domains that apply to the organization
{% endhint %}

<figure><img src="/files/5xFWK9P6DtB6r3rBQTWG" alt=""><figcaption><p>Add a Domain</p></figcaption></figure>

1. To create a Domain: click on the + icon in the top right corner.
2. Add a name - Synthea & Description
3. Upload an image: /Workshop--Data-Quality/images/synthea\_domain.jpg

<figure><img src="/files/RK0SW347Q37WbqVKoYs6" alt=""><figcaption><p>Synthea Domain</p></figcaption></figure>

4. Click on the 3 dots and select: 'Edit' and add a Description - Patients medical history.
5. To add a sub-domain, click on the Domain name - Synthea - followed by the 3 dots that appear under fields or expand and select the option from the lefthand menu.

<figure><img src="/files/lY37p6YGfRbnLInrpEo7" alt=""><figcaption><p>Add Sub-domain or Term</p></figcaption></figure>

<figure><img src="/files/zu7QIHgt7Qcrrkl9J2CU" alt=""><figcaption><p>Manage Domains</p></figcaption></figure>
{% endtab %}

{% tab title="Terms" %}
{% hint style="info" %}
A Term is the metadata definition of a field type, a user can define an attribute following metadata properties, and the PDQ platform will automatically assign the defined properties to the attribute once identified.

Lets take a look at the Patients SSN - Social Security Number.
{% endhint %}

<figure><img src="/files/qMc5oUnGejEBHsc5FLBB" alt=""><figcaption><p>Add a Term</p></figcaption></figure>

1. From the Domain page, exapnd the left hand menu, click on the 3 dots and select the option Add Term.

<figure><img src="/files/vZtF04eDfcrqACM7N2RZ" alt=""><figcaption><p>Add a Term - Social Security Number</p></figcaption></figure>

2. Once created, Click on: 'Terms'.

<figure><img src="/files/2yzyTviYFHjClUyHCr6c" alt=""><figcaption><p>Term - Social Security Number</p></figcaption></figure>

3. Check the Data Type as defined in the database tables or Table option - DBeaver&#x20;

<figure><img src="/files/McRX4Asz2C2JaKFNjLVA" alt=""><figcaption><p>SSN</p></figcaption></figure>

<figure><img src="/files/EYGU6D856kCNpfTd5vt3" alt=""><figcaption><p>SSN</p></figcaption></figure>

4. Click on the Term - Social Security Number

<figure><img src="/files/iCzI3YCy6ogCFNqrhdy4" alt=""><figcaption><p>Term - Social Security Number</p></figcaption></figure>

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{% endtab %}

{% tab title="Tags" %}

{% endtab %}

{% tab title="Applications" %}

{% endtab %}

{% tab title="Dimensions" %}

{% endtab %}

{% tab title="Fields" %}

{% endtab %}
{% endtabs %}


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