Node Connectivity
There are 5562 nodes that can be used as predessesor
for a node with an input port of type 
Generic Port.
Workflow Output Modern UI
Sends back data to a KNIME workflow calling this workflow. For use in workflows that are called from other workflows.
Call Workflow (Table Based) Modern UI
Calls workflows
Call Workflow (Row Based) Modern UI
Calls a remote or local workflow for each row in the input table, passing a JSON object and appending results as new columns.
Call Workflow (Table Based) Deprecated
Calls workflows
Container Input (Credentials)
Receives credentials from an external caller (e.g the Call Workflow (Table Based) node).
Container Input (Raw HTTP)
Reads the body, headers, and the query string from an HTTP request calling the workflow and outputs it in 3 different tables.
Container Input (Row)
Receives a row from an external caller (i.e. the Call Local/Remote Workflow (Row Based) nodes or via REST)
Container Input (Table) Modern UI
Reads the content of a table from an external caller (e.g the Call Workflow (Table Based) node).
Container Input (File)
Receives an external file (e.g. provided via an upload) and exposes it via a flow variable.
Container Input (Variable) Modern UI
Injects flow variables optionally defined by a specification to the workflow.