## Connection To establish a connection with the **DynamoDB** data source, you can either click on the **+Add new Data source** button located on the query panel or navigate to the **[Data sources](/docs/data-sources/overview)** page through the ToolJet dashboard.

ToolJet supports connecting to DynamoDB using three methods: **IAM Credentials**, **AWS Instance Credentials**, or **AWS ARN Role**. When using **IAM Credentials**, you will need to provide the following information: - **Region** - **Access key** - **Secret key** It is recommended to create a dedicated IAM user for the database in order to have granular control over ToolJet's access levels.

To connect to DynamoDB using an **AWS Instance Credentials**, select the option to **Use AWS Instance Credentials**. This will utilize the IAM role attached to the EC2 instance where ToolJet is running. The WebIdentityToken parameter obtained from a successful login with an identity provider is used to access the metadata service of an ECS container and the EC2 instance.

If you prefer to use an **AWS ARN Role**, you will need to provide the following details: - **Region** - **Role ARN**

:::info Click on the **Test Connection** button to verify the correctness of the provided credentials and the accessibility of the database to the ToolJet server. Finally, click on the **Save** button to save the data source configuration. :::

## Querying DynamoDB To perform queries on **DynamoDB**, click on the **+Add** button in the query manager located at the bottom panel of the editor. Select the previously added database as the data source for the query. Choose the desired operation and click on the **Run** button to run the query.

:::tip You can apply transformations to the query results. Refer to our transformations documentation for more information: [link](/docs/tutorial/transformations) :::

## Supported Operations - **[List Tables](#list-tables)** - **[Get Item](#get-item)** - **[Query Table](#query-table)** - **[Scan Table](#scan-table)** - **[Delete Item](#delete-item)** - **[Update Item](#update-item)** - **[Describe Table](#describe-table)** - **[Create Table](#create-table)** - **[Put Item](#put-item)**

### Get Item Retrieves a single item from a table. You must specify the primary key for the item that you want. You can retrieve the entire item, or just a subset of its attributes. **Required parameters:** - **Table** - **Key name** Syntax for Key name: ```json { "Key": { "ForumName": { "S": "Amazon DynamoDB" }, "Subject": { "S": "How do I update multiple items?" } } ```

### Query Table Retrieves all items that have a specific partition key. You must specify the partition key value. You can retrieve entire items, or just a subset of their attributes. Optionally, you can apply a condition to the sort key values so that you only retrieve a subset of the data that has the same partition key. You can use this operation on a table, provided that the table has both a partition key and a sort key. You can also use this operation on an index, provided that the index has both a partition key and a sort key. **Required parameters:** - **Query condition** Syntax for Query condition: ```json { "TableName": "Reply", "IndexName": "PostedBy-Index", "Limit": 3, "ConsistentRead": true, "ProjectionExpression": "Id, PostedBy, ReplyDateTime", "KeyConditionExpression": "Id = :v1 AND PostedBy BETWEEN :v2a AND :v2b", "ExpressionAttributeValues": { ":v1": { "S": "Amazon DynamoDB#DynamoDB Thread 1" }, ":v2a": { "S": "User A" }, ":v2b": { "S": "User C" } }, "ReturnConsumedCapacity": "TOTAL" } ```

### Scan Table Retrieves all items in the specified table or index. You can retrieve entire items, or just a subset of their attributes. Optionally, you can apply a filtering condition to return only the values that you are interested in and discard the rest. **Required parameters:** - **Scan condition** Syntax for Scan condition: ```json { "TableName": "" } ```

### Delete Item Deletes a single item from a table. You must specify the primary key for the item that you want to delete. **Required parameters:** - **Table** - **Key name** Syntax for Key name: ```json { "Key": { "ForumName": { "S": "Amazon DynamoDB" }, "Subject": { "S": "How do I update multiple items?" } }, "ConditionExpression": "attribute_not_exists(Replies)", "ReturnValues": "ALL_OLD" } ```

### Update Item Update an item in DynamoDB by specifying the primary key and providing new attribute values. If the primary key does not exist in the table then instead of updating it will insert a new row. **Required parameters:** - **Update Condition** Syntax for Update Condition: ```json { "TableName": "USER_DETAILS_with_local", "Key": { "USER_ID": 1, "USER_NAME": "Nick" }, "UpdateExpression": "set USER_AGE = :age, USER_FEE = :fee", "ExpressionAttributeValues": { ":age": 40, ":fee": 230545 } } ```

### Describe Table This operation in DynamoDB retrieves metadata and configuration details about a specific table. It provides information such as the table's name, primary key schema, provisioned throughput settings, and any secondary indexes defined on the table. **Required parameters:** - **Table**

### Create Table This operation in DynamoDB enables you to create a new table by specifying its name, primary key schema, and optional configurations. **Required parameters:** - **Table Parameters** Syntax for Table Parameters: ```json { "AttributeDefinitions": [ { "AttributeName": "USER_ID", "AttributeType": "N" }, { "AttributeName": "USER_FEE", "AttributeType": "N" } ], "KeySchema": [ { "AttributeName": "USER_ID", "KeyType": "HASH" } ], "LocalSecondaryIndexes": [ { "IndexName": "USER_FEE", "KeySchema": [ { "AttributeName": "USER_ID", "KeyType": "HASH" }, { "AttributeName": "USER_FEE", "KeyType": "RANGE" } ], "Projection": { "ProjectionType": "KEYS_ONLY" } } ], "ProvisionedThroughput": { "ReadCapacityUnits": 1, "WriteCapacityUnits": 1 }, "TableName": "USER_FEE_LOCAL", "StreamSpecification": { "StreamEnabled": false } } ```

### Put Item This operation allows you to create or replace an item in a table. It enables you to specify the table name, provide the attribute values for the new item, and define the primary key attributes to uniquely identify the item. **Required parameters:** - **New Item Details** Syntax for New Item Details: ```json { "TableName": "USER_DETAILS_with_localS", "Item": { "USER_ID": 1, "USER_NAME": "NICK", "USER_AGE": 34, "USER_FEE": 1234.56 } } ```