# Learner activities (ERD)

The UCDM includes a number of entities to represent Learner activities. These entities represent the core learning activities –such as assignments, papers, exams, quizzes, etc– that are designed by instructors and experienced by students in a learning environment.

## Entities <a href="#learneractivities-erd-entities" id="learneractivities-erd-entities"></a>

The Learner activity entities in the Unizin Common Data Model are as follows:

<table data-full-width="true"><thead><tr><th width="263.33333333333337">Entity</th><th>Definition</th><th>Data dictionary documentation</th></tr></thead><tbody><tr><td>Learner activity</td><td>An assignment, task, piece of work, or other activity that is as part of a course of study.</td><td><a href="https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity">https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity</a></td></tr><tr><td>Learner activity override</td><td>A rule or set of rules that overrides the default conditions of a learner activity for a particular audience of students.</td><td><a href="https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity_override">https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity_override</a></td></tr><tr><td>Learner activity result</td><td>The result of a learner engagement with a learner activity.</td><td><a href="https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity_result">https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity_result</a></td></tr><tr><td>Learner activity group</td><td>A group of learner activities as part of a course design.</td><td><a href="https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity_group">https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity_group</a></td></tr><tr><td>Learner activity group grade</td><td>The score awarded to a Person in a particular Learner activity group.</td><td><a href="https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity_group_grade">https://docs.udp.unizin.org/ucdm/data-dictionary-2.0.html#learner_activity_group_grade</a></td></tr></tbody></table>

## Entity Relationship Diagram (ERD) <a href="#learneractivities-erd-entityrelationshipdiagram-erd" id="learneractivities-erd-entityrelationshipdiagram-erd"></a>

The following Entity Relationship Diagram (ERD) represents the UCDM's Learner activity entities and their relationships.

<figure><img src="/files/yjTkdTC4zVQs8Qks6p5W" alt=""><figcaption></figcaption></figure>

{% hint style="info" %}
**Academic structures ERD only**

This diagram only represents entities in the Learner activities section of the Unizin Common Data Model. Any relationships with entities outside of the Learner activities section of the UCDM are not shown here.
{% endhint %}


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