Control Flow Patterns - Business Processes - Lecture Slides, Slides of Business Policy and Regulation

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Introduction to Control

Flow Patterns and

BizAgi

Overview

 Understanding and modeling business processes

BPMN - Introduction

 The Business Process Modeling Notation (BPMN) a generalized, yet formal language used to describe business processes  It’s actually just an XML dialect  The standard is defined by the Object Management Group  OMG has defined many standards  The current version of the specification is 2.

BPEL - Introduction

 The Business Process Execution Language (BPEL) is an executable language to specify process actions using Web Services  Companies including IBM and Oracle have BPEL implementations

BPMN Basics

 BPMN is a formal language that can be represented by a set of graphical elements  You will use graphical tools, rather than working with the BPMN XML itself  The diagrams look similar to flowcharts because they are based on flowcharts

BPMN Element Categories

 Flow Objects consist of events, activities, and gateways  Connecting Objects describe the sequence of flow objects  Swimlanes depict the participants in the process  Artifacts

Event Symbol Start Intermediate End

Flow Objects (Events)

 Events are categorized as Start , Intermediate , and End events  Events are represented as open circles

Activity Symbol Task

Sub process

Flow Objects (Activities)

 Activities are represented as rounded rectangles  Activities are of two types

Connecting Objects

 These connect flow objects together and are of three types  Sequence Flow  Represented with a solid line  Shows the order in which activities occur  Message Flow  Represented with a dashed line and open arrowhead  Shows messages between different participants  Association  Represented with a dotted line  Associate external data / text …

Swimlanes

 Swimlanes appear in a pool  A pool represents a participant in a process  Flow objects and connecting objects appear in swimlanes in a pool  A swimlane is used to categorize activities in a pool  Messages are used to communicate between swimlanes in a pool

Artifacts

 Artifacts are used to extend the basic BPMN notation  Artifacts are of three types  Data objects depict the data required by an activity  A Group is used for documentation purposes to group related activities  Annotations just contain additional text  Note that BizAgi supports additional artifact types