> For the complete documentation index, see [llms.txt](https://docs.beefree.io/beefree-sdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.beefree.io/beefree-sdk/data-structures/getting-started.md).

# Getting Started

## Introduction

Schemas are structured definitions that describe the format, rules, and relationships of data. They ensure consistency by validating data formats. In Beefree SDK, schemas define how data is structured in relation to email, page, and popup templates. This section of the documentation lists each schema used within Beefree SDK, and outlines its corresponding purpose, properties, requirements, and usage examples to help you utilize each data structure effectively.

### Schema Scenarios

Data schemas provide you with a structured format to:

* Validate JSON structures.
* Create databases for storing rows, templates, and other types of data.
* Make API calls with valid request bodies.

Learn more about data structures and schemas within Beefree SDK in the following sections.

<table data-view="cards"><thead><tr><th></th><th data-type="content-ref"></th></tr></thead><tbody><tr><td>Schema Catalog</td><td><a href="/pages/UeV8wv4VYTlUVKaiLK98">/pages/UeV8wv4VYTlUVKaiLK98</a></td></tr><tr><td>Simple Schema</td><td><a href="/pages/d36bvvDBT2mzeElnqYP5">/pages/d36bvvDBT2mzeElnqYP5</a></td></tr><tr><td>Row Metadata</td><td><a href="/pages/VaGa4XNqYJb86qzIwXMC">/pages/VaGa4XNqYJb86qzIwXMC</a></td></tr><tr><td>Form Validation Schema</td><td><a href="/pages/nqgwG2DWbGtOGJO0n1iz">/pages/nqgwG2DWbGtOGJO0n1iz</a></td></tr><tr><td>Comments Schema</td><td><a href="/pages/5I0RzQfFJ7YacGLttzzB">/pages/5I0RzQfFJ7YacGLttzzB</a></td></tr><tr><td>Change Schema</td><td><a href="/pages/OC0xg1vZN2aQ6LZ8PBsy">/pages/OC0xg1vZN2aQ6LZ8PBsy</a></td></tr></tbody></table>


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