--- title: "MongoDB Module Overview" slug: "mongodb" description: "This document shows how to configure steps for reading and writing from a MongoDB database to automatically deserialize and serialize from a selected data type via the MongoDB module. The document provides a tutorial, to step users through this process. " updated: 2025-01-31T14:17:35Z published: 2025-01-31T14:17:35Z --- > ## 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. # MongoDB Module Overview ## Overview The **MongoDB Module** allows a user to configure steps to read and write from a MongoDB database, automatically deserializing to and serializing from a chosen data type. ## Example Prerequisites The following is required before the MongoDB Module may be properly used:  - A preexisting MongoDB Account. - Proper installation and set up of the MongoDB Module in Decisions. - Create a [Project Dependency](https://documentation.decisions.com/docs/project-dependencies). For more information on how to install Modules in Decisions, see: [Installing Modules.](https://documentation.decisions.com/v9/docs/installing-modules-decisions) This example will demonstrate how to set up the MongoDB Module in Decisions. 1. Navigate to any folder and select Create DataTypes/Integration go to Database Integration and select Add MongoDB Server at the bottom of the list.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/mongodbv98-1-24.png) 2. Enter a name for the Entity and check the checkboxes for **Get Connection String from Flow**, **Get Database Name from Flow**, **Get Collection Name from Flow**, and **Choose Document Type on Step** under SETTINGS. Then, click OK.![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/Screenshot%202024-08-01%20165006.png) Below are the settings configuration options for the MongoDB server in the **Entity dialog**window. - **Get Connection String from Flow**: This is for the connection string to connect to the MongoDB server. If set to true the value needs to be determined at runtime as a step input. - **Get Database Name from Flow**: The database name to use. If set to true this value needs to be determined at runtime. - **Get Collection Name from Flow**: The collection name to use. If set to true this value needs to be determined at runtime. - **Choose Document Type on Step**: The document type to serialize/deserialize while writing to and reading from MongoDB. If only working with a single document type, it can be specified here. Otherwise, check this checkbox to be able to set this at runtime. These settings can be changed at any time by right-clicking on the MongoDB entity and selecting Edit. ![](https://cdn.document360.io/6ef8bcc1-6489-4486-9ad1-83acff7e5df0/Images/Documentation/image-1722545861118.png) #### Available Steps The following steps will be available in the Flow Designer Steps panel **Integration > MongoDB** under the name given when creating the connection. | Steps | Description | | --- | --- | | [Get Document By ID](https://documentation.decisions.com/step-library/docs/get-document-by-id) | Fetches a single document by ID. | | [Fetch Documents](https://documentation.decisions.com/step-library/docs/fetch-documents) | Fetches a list of documents based on the specified filters. Allows users to filter based on a field in the document, a field in a nested document, or by combining these filters with AND/OR. | | [Insert Document](https://documentation.decisions.com/step-library/docs/insert-document) | Inserts the given document. If the chosen document type has an Id property and a value is specified, that property will be used for the new document. Otherwise, the Id property will be updated to contain the new ID after insertion. | | [Insert Documents](https://documentation.decisions.com/step-library/docs/insert-documents) | This step enables Users to insert a list of items into a MongoDB Database. | | [Replace Document](https://documentation.decisions.com/step-library/docs/replace-document) | Entirely replaces one document with another by ID. If the chosen document type has an Id property, its value must match the value of the Document ID input. | | [Replace Documents](https://documentation.decisions.com/step-library/docs/replace-documents) | This step replaces a list of documents with another list of documents. | | [Delete Document](https://documentation.decisions.com/step-library/docs/delete-document) | Deletes one document by ID. | | [Delete Documents](https://documentation.decisions.com/step-library/docs/delete-documents) | This step enables Users to delete a list of items from a MongoDB Database. | There are also steps to manage collections and databases under **Integration > MongoDB > Advanced**. | Steps | Description | | --- | --- | | [Drop Collection](https://documentation.decisions.com/step-library/docs/drop-collection-advanced) | Removes a collection by name. | | [Drop Database](https://documentation.decisions.com/step-library/docs/drop-database-advanced) | Removes a database by name. | | [Get Collection Stats](https://documentation.decisions.com/step-library/docs/get-collection-stats-advanced) | Retrieves a list of statistics/properties from a specified collection. | | [Get Database Stats](https://documentation.decisions.com/step-library/docs/get-database-stats-advanced) | Retrieves a list of statistics/properties from a specified database. | | [List Collection Names](https://documentation.decisions.com/step-library/docs/list-collection-names-advanced) | Returns a list containing the names of all collections in the specified database. | | [List Database Names](https://documentation.decisions.com/step-library/docs/list-database-names-advanced) | Returns a list containing the names of all databases on the specified MongoDB server. | | [Rename Collection](https://documentation.decisions.com/step-library/docs/rename-collection-advanced) | Renames the specified collection within the chosen database. |