CICS Transaction Types

CICS has the following types of transactions:

Non-conversational - a single transaction/task pair that has one input from a terminal user and returns a single output
Conversational - a single transaction and corresponding task that can interact with the terminal user by using several input and output operations
This type of work can use excessive CICS resources and risk causing enqueue delays because the task retains resources between terminal interactions.
Pseudo conversational - a single transaction that might span several tasks
This type of work benefits a system when your response time is relatively slow because CICS resources are returned to the system during think times.
Non-terminal - no terminal or principal facility is associated with this task, such as tasks initiated with DPL