bpmn 2 0-tutorial

7/16/2019 BPMN 2 0-Tutorial

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BPMN 2.0 Tutorial

Daniel BrookshierDistinguished Fellow

No Magic Inc.


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About the Tutorial

Generated from MagicDraw UML

Based on current BPMN 2.0 for UML referenceimplementation.

Developed by Daniel Brookshier, Distinguished Fellow,No Magic Inc. [email protected]


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What is BPMN ?

Business Process Modeling Notation

Developed by Business Process Management Initiative (BPMI),and is currently maintained by the Object Management Groupsince the two organizations merged in 2005

Supports business process management for technical andbusiness users

Bridge communication gap between business process design and

implementation


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What?

BPMN is simple

Process diagrams business people like

Less complex (business likes that too)

Under the covers, technical enough for techies


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What Does BPMN Not Do?

State transitions

Functional decomposition

Organizational hierarchies

Data modeling


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What is BPMN Like?

Similar to flowcharts and UML Activity diagrams

Flow of activities with various messaging and data

Can be used for service orchestration in SOA


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Primary Components


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Why BPMN?

Standard notation

Model concepts and/or implementation of

business process

Models high-level process concepts

Notation is not complex


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Issues With BPMN

Limited complexity

Process/conversation oriented

Very high level

Cannot see details of tasks or data


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Solving BPMN Issues ViaUML

BPMN as an extension to UML

Enhanced ability to implement complexity

Link implementation with orchestration

Greater tool support Fill in gaps with details state, decomposition, data,

implementations

BPMN for UML specification in progress at OMG


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Executable Verses

Non-executable

Process flows can be executable or non executable

Executable process follows specific rules

Formal condition expressions are typically not includedin non-executable form

Executable does not have Manual, Abstract, and other

non-execution elements


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BPMN Diagram Zoo

Process Flow of activity, decisions, dataand events

Collaboration Conversations andinteractions (also process)

Choreography Tasks performed by

participants and how participantscoordinate interactions via messages.


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Simple BPMN Process Diagram


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Process with Pools and Lanes


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Simple Collaboration


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Simple Collaboration


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Understanding Collaborations


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BPMN Choreography

Sequence of interactions between Participants.

Choreographies exist outside of or in between Pools.

A Choreography Task is an atomic Activity in a ChoreographyProcess.

The task represents an Interaction, which is one or two Messageexchanges between two Participants.

Helps to show who initiates the activity and the first message.


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Simple Choreography Task With

Messages


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BPMN Choreography Diagram


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Setting Messages on

Choreography


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Example BPMNDiagrams


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Book Loan and Reservation

(Librarian Perspective)


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Loan a book (main scenario)


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Book Loan and Reservation

(Reader Perspective)


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Loan a Book


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Process Symbols


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Activities

Work that is performed within a Business Process.

Activity can be atomic or non-atomic (compound)

High-level, so does not describe the activity detail (notthe job of BPMN)

Three types: Task, Sub-process, and Transaction


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Activiy Symbols


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Task Symbols (1 of 2)


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Task Symbols (2 of 2)


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What are Sub Processes?

Is in the context of the process and can access thecontextual data.

Can be expanded or collapsed to show detail of thesub-process or to hide the detail.

Sub process MUST define an internal process with astart and end event.

A sub process is only reusable within the parent

process (i.e. it is not reusable in the overall design).


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Sub Process Symbols


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Gateways

Gateways are used to control how SequenceFlows interact as they converge and divergewithin a Process.

Capable of consuming or generating additional

tokens.

Define decisions/branching (exclusive,inclusive, and complex), merging, forking, and

joining.


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Gateway Symbols


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About Data Symbols

Data Objects provide information about whatActivities require and/or what they produce

Represent a singular object or a collection of

objects

Data Input and Data Output provide the sameinformation for Processes


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Data


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Event Symbols Types


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Start Events


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Intermediate Events

E d E


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End Events

End Event indicates where a Process will end.

In terms of Sequence Flows, the End Event ends the flow of theProcess, and thus, will not have any outgoing Sequence Flows.

No Sequence Flow can connect from an End Event.

Depending on the type, other rules are enforced (like errorhandling and/or how the process is terminated).

E d E t S b l


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End Event Symbols

E d E t (1 f 3)


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End Events (1 of 3)

E d E t (2 f 3)


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End Events (2 of 3)

End E ents (3 of 3)


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End Events (3 of 3)

Pools


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Pools

A Pool is the graphical representation of a Participant ina Collaboration.

It also acts as a swimlane and a graphical containerfor partitioning a set of Activities from other Pools

Usually in the context of B2B situations

Pool MAY have internal details, in the form of theProcess that will be executed

Pool MAY have no internal details, i.e., it can be a"black box."

Lanes


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Lanes

Lane (Swimlane) is a sub-partition within a Process

Extend the entire length of the Process

Lanes are used to organize and categorize Activities

Pool and Lanes


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Pool and Lanes

CONDITIONAL FLOW


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CONDITIONAL FLOW

Default Sequence Flow


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Default Sequence Flow

Exception Flow


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Exception Flow

Data Flow


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Data Flow

Compensation Flow


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Compensation Flow

Message Flows


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Message Flows

Flow of Messages between two Participants that are prepared tosend and receive them.

A Message Flow MUST connect two separate Pools.

They connect either to the Pool boundary or to Flow Objects withinthe Pool boundary.

They MUST NOT connect two objects within the same Pool.

Message Flows


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Message Flows

Message Flow Between Lanes


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Message Flow Between Lanes

Data Associations


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Data Associations

Data Associations are used to move data between Data Objects,

Properties, and inputs and outputs of Activities, Processes, andGlobalTasks.

Tokens do not flow along a Data Association, and as a result theyhave no direct effect on the flow of the Process.

Used for retrieving data from Data Objects or Process Data Inputsto fill the Activities inputs and push the output values from theexecution of the Activity back into Data Objects or Process DataOutputs.

Data Association Example


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Data Association Example


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Thank You

Daniel Brookshier

[email protected]

bpmn 2 0-tutorial

Documents

bpmn issues viauml bpmn

complex7162019 bpmn

current bpmn

omg7162019 bpmn

lanes7162019 bpmn

soa7162019 bpmn

techies7162019 bpmn

data7162019 bpmn