> For the complete documentation index, see [llms.txt](https://interfacing.gitbook.io/interfacing-help-files/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://interfacing.gitbook.io/interfacing-help-files/interfacing-help-files-fr/developpeurs-de-solutions/api-and-information-repository/data-dictionary-and-entity-relationship-diagram.md).

# Data Dictionary & Entity Relationship Diagram

This section provides essential references to better understand the data model and structure within the platform. These resources are helpful for anyone working with the IMS database, reporting tools, or APIs.

## Data Dictionary

The Data Dictionary outlines key IMS metadata, including field names, data types, and descriptions. It helps clarify how data is stored and used across the system.

* <mark style="color:red;">View the IMS Data Dictionary</mark>

## Entity Relationship Diagram (ERD)

The ERD visualizes how different IMS entities relate to one another. Each table (entity) includes its fields (attributes), with lines representing relationships between them.

* <mark style="color:red;">View the IMS ERD Online</mark>

{% hint style="info" %}
The diagram may appear blank when first loaded. Try zooming out or use your mouse and scroll bars to navigate.
{% endhint %}


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