Data post through BULK API

Santosh - yes, you can create multiple tasks on the same pipeline.  Just create a Scheduled task with the default parameters you want to run with, and also create a Triggered task you can call on demand.

Santosh 

You can create different types of tasks(Triggered, Scheduled, Ultra) on the same pipeline. But in your case, you can have one triggered pipeline and have a check in the pipeline where: 

•  if there is an input data sent by the source, process that data. 
• else process all data from the source.