---
title: "Data Structure CRUD Overview"
slug: "data-structure-crud-overview"
tags: ["CRUD Actions"]
updated: 2025-06-23T14:51:22Z
published: 2025-06-23T14:51:22Z
---

> ## Documentation Index
> Fetch the complete documentation index at: https://documentation.decisions.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Data Structure CRUD Overview

## Overview

Decisions Data Structure Matrix

To learn more, refer to the [Differences Between Data Structures](https://documentation.decisions.com/v9/docs/differences-between-data-structures) article.

After creating a Data Structure capable of writing to the database, Designers maintain its data internally by implementing **Create, Read, Update, and Delete (CRUD)** actions via Flow steps.

CRUD Action steps are auto-generated after creating the Data Structure and are accessible under the **User Defined Types**step category sorted by its Data Structure type. Expanding User-Defined Types reveals the sub-categories tabulated below:

| **Category** | **Contents** |
| --- | --- |
| [Case Entity](https://documentation.decisions.com/v9/docs/case-entity-crud-actions) | Contains CRUD Flow steps for user-created Case Entities |
| [CSV Structures](https://documentation.decisions.com/v9/docs/creating-a-csv-data-structure) | Contains CRUD Flow steps CSV generated data types |
| [CSV Structures [Database Stored]](https://documentation.decisions.com/v9/docs/creating-a-csv-data-structure) | Contains CRUD Flow steps CSV generated data types |
| [Database Structures](https://documentation.decisions.com/v9/docs/database-structure-crud-actions) | Contains CRUD Flow steps for user created Database Structures |
| [Database Structures [Leased]](https://documentation.decisions.com/v9/docs/leased-entities) | Contains CRUD steps for leased Database Structures |
| Defined Data Structures [Advanced] | Contains CRUD Flow steps for user-created Database Structures [Advanced] |
| [Entities](https://documentation.decisions.com/v9/docs/entity-structure-crud-actions) | Contains CRUD Flow steps for user created Entities |
| [Entity Extensions](https://documentation.decisions.com/v9/docs/entity-extension-crud-actions) | Contains CRUD steps for Entity Extensions |
| Flow Execution Extensions | Contains CRUD steps for Flow Execution Extensions |
| Folder Extensions | Contains CRUD steps for user created Folder Extensions |
| [JSON Schema Structures](/v9/docs/creating-types-json-schema) | Contains serialization and deserialization steps for user-defined JSON Schema Types |
| JSON Structures | Contains serialization and deserialization steps for user-defined JSON Types |
| XML Structures | Contains serialization and deserialization steps for user-defined XML Types |
| XSD Structures | Contains serialization and deserialization steps for user-defined XSD Types |

![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/2025-06-23_10h50_26.png)