# System Architecture

The following diagram shows how a Distributed Connector might be used to retrieve documents from multiple repositories.

1. An interface sends a query to the Distributed Connector.
2. If the query does not specify the documents that are required (using document identifiers), the Distributed Connector sends a query to IDOL Server.
3. The Distributed Connector sends actions to the relevant connectors to retrieve the documents.

The following diagram shows how a Distributed Connector might be used when viewing documents.

1. An interface sends a view action to the view server.
2. The view server sends the action to the Distributed Connector.
3. The Distributed Connector sends a query to IDOL Server to find the connector group that retrieved the document. The Distributed Connector requires this information so that it can send the action to the same connector group.
4. The Distributed Connector sends the action to the correct connector group, which returns the document so that it can be displayed in the interface.

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