• DataConnectionObject uses a data connector to retrieve data from a remote storage system handling authentication and data retrieval.
• Use Import to retrieve data from the linked resource.
• DataConnectionObject creates a reference to a data source. The source does not need to exist yet.
• General keys typically found in assoc are:
• "ConnectionName" name of the connection ("AmazonS3", "Dropbox")
  "Location" connection-specific path or location details
  "Redownload" whether to redownload cache files

AmazonS3

• For "AmazonS3", additional keys of assoc include:
• "Region" the region where the bucket is located
  "Bucket" the bucket name containing the data
• Possible forms of "Location" when connecting to an Amazon S3 object include:
• "key" assigned name

AzureBlobStorage

• For "AzureBlobStorage", additional keys of assoc include:
• "Account" the account name
  "Container" the container name
• Possible forms of "Location" when connecting to an Azure blob include:
• "path" path to the blob

Dropbox

• For "Dropbox", possible forms of "Location" when connecting to data include:
• "path" path to the file

IPFS

• For "IPFS", possible forms of "Location" when connecting to data include:
• "cid" IPFS content identifier (CID)

Options

• DataConnectionObject supports the Authentication option.
• Possible values for Authentication are:
• Automatic attempt to use saved credentials or give a dialog
  "Dialog" give authentication parameters via a dialog
  SystemCredential ["key"] retrieve authentication information from secure storage
  SystemCredentialData […] stored authentication data
  assoc provide explicit credentials
• Use the form Authentication :> SystemCredential ["key"] or Authentication :> Environment ["var"] to delay evaluating securely stored credentials.
• The following keys are accepted by Authentication assoc:
• "AmazonS3" <|"AccountKeyID"…,"AccountSecret"…|>
  "AzureBlobStorage" <|"SASToken"…|>

Properties

• DataConnectionObject […]["Properties"] returns the list of all available properties of the connection.
• DataConnectionObject […][prop] returns the property prop of the connection.
• Supported properties typically include:
• "ConnectionName" name of the connection
  "Location" specified path or SQL query
  "Redownload" whether the connection always redownloads
• When data is retrieved from a connection, it is usually cached in $TemporaryDirectory .

Basic Examples  (4)

Scope  (9)

Options  (5)

Applications  (1)