Department of Computer Science 1 CSS 496 Business Process Re-engineering for BS(CS) Chapter 2: Workflow Management Khurram Shahzad Based on Petia, Marlon, Aalst and Weske Lectures

Department of Computer Science 2 Workflow Management The important achievement of workflow management is explicit representation of process structures in process models and controlled enactment of business processes according to these models The goal of workflow is to manage the flow of work so that right work is performed by right person at right time

Department of Computer Science Workflow Management 3 Workflow is the automation of a business process, in whole or part, during which documents, information, or tasks are passed from one participant to another for action, according to a set of procedural rules

Department of Computer Science 4 Workflow Management A workflow management system (WFMS) is a software package that can be used to support the definition, management and execution of workflow processes A workflow management system is a software systems that defines, creates, and manages the execution of workflows through the use of software, running one or more workflow engines, which is able to interpret the process definition, interact with workflow participants, and, where required, invoke the use of IT tools and applications

Department of Computer Science 5 Informal Workflow

Department of Computer Science 6 Business Process Management “True Business Process Management is an amalgam of traditional workflow and the 'new' BPM technology. It then follows that as BPM is a natural extension of – and not a separate technology to – Workflow, BPM is in fact the merging of process technology covering 3 process categories: interactions between (i) people-to-people; (ii) systems-to-systems and (iii) systems-to-people – all from a process- centric perspective. This is what true BPM is all about.” Jon Pyke, CTO Staffware.

Department of Computer Science 7 WFMS, EAI, BPMS

Department of Computer Science 8 Enterprise Systems Architectures

Department of Computer Science 9 A small case study: Double Check (DC) Processing of insurance claims involving registration, two checks, and a payment of rejection Five tasks:  register (register insurance claim)  checkA (check insurance policy)  checkB (check damage reported)  pay (pay for the damage)  reject (inform customer about rejection) Registration is followed by two checks which can be handled in parallel. Each of the checks results in “OK” or “not OK”. If both are OK, pay otherwise reject. Three roles: register (for task register), checks (for both checks), and pay/reject (for final tasks). register checkA checkB pay reject

Department of Computer Science 10 DC Example

Department of Computer Science 11 DC Example Adding a step

Department of Computer Science 12 DC example

Department of Computer Science 13 DC Example

Department of Computer Science 14 DC Example

Department of Computer Science 15 DC Example

Department of Computer Science 16 DC Example

Department of Computer Science 17 DC Example

Department of Computer Science 18 DC Example

Department of Computer Science 19 DC Example

Department of Computer Science 20 DC Example The manager’s view Managing users/groups Monitoring and managing processes and cases

Department of Computer Science 21 DC Example

Department of Computer Science 22 Audit Trail

Department of Computer Science 23 Event Driven Process Chains (ARIS/SAP)

Department of Computer Science 24 Complex Process

Department of Computer Science 25 Classification of Workflows System Workflows  A system workflow consists of activities that are implemented by software systems without any user involvement Human Interaction Workflows  Workflows in which humans are actively involved and interact with information systems are called human interaction workflows

Department of Computer Science 26 Classification of Workflows System Workflows  A system workflow consists of activities that are implemented by software systems without any user involvement Human Interaction Workflows  Workflows in which humans are actively involved and interact with information systems are called human interaction workflows