DynamoDB

DynamoDB is a managed non-relational database service provided by Amazon. ToolJet has the capability to connect to DynamoDB for reading and writing data.

Connection

To establish a connection with the DynamoDB global datasource, you can either click on the +Add new global datasource button located on the query panel or navigate to the Global Datasources page through the ToolJet dashboard.

ToolJet supports connecting to DynamoDB using three methods: IAM credentials, AWS Instance Profile, 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 Profile, select the option to Use AWS Instance Profile. 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 the Test connection button to verify the correctness of the provided credentials and the accessibility of the database to the ToolJet server. Finally, click the Save button to save the data source configuration.

Querying DynamoDB

To perform queries on DynamoDB, click the + 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 'Save' to store the query.

To execute the query, click the 'Run' button. Note that the query must be saved before running.

tip

You can apply transformations to the query results. Refer to our transformations documentation for more information: link

List Tables

Returns an array of table names associated with the current account and endpoint. The output from List Tables is paginated, with each page returning a maximum of 100 table names.

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:

{
    "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:

{
    "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:

{"TableName": "<table_name>"}

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:

{
    "Key": {
        "ForumName": {
            "S": "Amazon DynamoDB"
        },
        "Subject": {
            "S": "How do I update multiple items?"
        }
    },
    "ConditionExpression": "attribute_not_exists(Replies)",
    "ReturnValues": "ALL_OLD"
}