...
Create: This happens either as part of application deployment or through the Lifecycle Microservices. After creating a schedule, it is initially disabled and will not execute any jobs.
Disable: Disabling a schedule will delete all pending jobs for the schedule from the job queue, and prevent new jobs from being created. This action will not suspend or abort any current execution of the workflow.
Enable: This action will put the schedule back into an active state, after a Disable action. Note that if the schedule was previously disabled, that aborted all pending jobs for the schedule. Therefore new triggers have to create new jobs for this schedule before its workflow is executed again.
Delete: This first disables the schedule and then permanently deletes it.
Update: This is equivalant equivalent to deleting the current schedule and creating a new one. It happens either when an application which contains a schedule is redeployed in CDAP, or through the Lifecycle Microservices.
...