BPMN Certification Level 1 Training Materials

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Category:NobleProg BPMN Certification Level 1

BPMN 2.0 Purpose ⌘

Provide a notation that is readily understandable by business and technical people
Create a standardized bridge for the gap between the business process design and process implementation
To ensure that XML languages designed for the execution of business processes, such as WSBPEL, can be visualized with a business-oriented notation.
To standardize a business process model and notation in the face of many different modeling notations and viewpoints
To provide a means of communicating process information to other businesses, users, managers and process implementers
To exchange BPMN definitions (both domain model and diagram layout) between different tools

Audience of BPMN ⌘

Business users
- Business analysts
- Strategy analyst
- Quality managers

Technical developers
- Process designers
- Developers
- Integrators
- Software, System and Enterprise Architects

Conformance ⌘

Software based on spec

software developed only partially matching compliance/conformance

Modeling Conformance

Process modeling
Choreography modelling

Execution Conformance

Process Execution
BPEL Process Execution

Tool can comply only to one of the above or any subset of them.

BPMN Complete Conformance complies to the all 4 above.

Sub-models within an end-to-end BPMN model ⌘

Processes (Orchestration)
- Private non-executable (internal) BP
- Private executable (internal) BP
- Public Processes
Choreographies
Collaborations (can include Processes and Choreographies
- Conversations

BPMN 2.0 compared to BPMN 1.2 ⌘

Formalizes the execution semantics for all BPMN elements
Defines an extensibility mechanism
Refines Event composition and correlation
Extends the definition of human interactions
Defines a Choreography model

BPMN Sub-models ⌘

Orchestration
- Private non-executable (internal) Business Processes
- Private executable (internal) Business Processes
- Public Processes
Choreographies
Collaborations, which can include Processes and/or Choreographies
- A view of Conversations

Private (Internal) Business Process ⌘

Internal to a specific organization
Other names:
- Workflow
- BPM Processes
- Orchestration of services
Can be executable and non-executable
Contained within a single Pool
The flow of Messages can cross the Pool boundary to show the interactions that exist between separate private Business Processes

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Public Process ⌘

Represents the interactions between a private Business Process and another Process or Participant
Only those Activities that are used to communicate to the other Participant(s) are included in the public Process
All other “internal” Activities of the private Business Process are not shown
Public Process shows to the outside world the Message Flows and the order of those Message Flows that are needed to interact with that Process
Public Processes can be modeled separately or within a Collaboration to show the flow of Messages between the public Process Activities and other Participants
Called “abstract” in BPMN 1.2.
Public Process is orchestrated by the private processes (as oppose to Collaboration)

Collaboration ⌘

Depicts the interactions between two or more business entities
Contains two or more Pools
Can be shown as two or more public Processes communicating with each other
The corresponding internal (executable) Processes are likely to have much more Activity and detail than what is shown in the public Processes.

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Choreography ⌘

Definition of the expected behavior
B procedural contract between interacting Participants
A self-contained Choreography have no Pools or Orchestration
Choreography exists between Pools (or Participants)
The Choreography Activities are interactions that represent a set (1 or more) of Message exchanges, which involves two or more Participants
There is no central controller, responsible entity or observer of the Process

Conversation ⌘

The Conversation diagram is a particular usage of and an informal description of a Collaboration diagram
Pools of a Conversation usually do not contain a Process and a Choreography is usually not placed in between the Pools of a Conversation diagram
A Conversation is the logical relation of Message exchanges
Message exchanges are related to each other and reflect distinct business scenarios
Conversation Diagram Provides a “bird’s eye” perspective of the different Conversations that relate to the domain

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Quiz

http://selfstudy.nobleprog.com/node/446/

Private Process

Category:NobleProg BPMN Certification Level 1

Simple Process

01.01 - Simple Process

Exercise 01.01

Purpose: familiarization with the tool and basic elements

Steps:

Login into Signavio
Create "yourname" folder in NPCBPM_Exercises folder
Create new BPMN 2.0 process diagram
Create the same process as shown in picture 01.01

Process Goals and Outcomes

01.02 - Process Goals and Outcomes

Exercise 01.02

To the above process, add "second shot" scenario ,i.e. when a person taking exam fails, they can try one more time.

Process Name

Process name is represented by name name of the Pool

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01.03 - Process Name

Roles and Lanes

Roles are represented by Lanes

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01.04 - Lanes

Lanes can be used to any kind of categorization (e.g. important, not important, etc...)
Lanes do not denote activities performer
Organization Roles can be denoted via Participant and a Pool as well, but this is determined when preparing process for execution.

Concurrent Tasks

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01.05 - Concurrent Tasks

A Parallel Gateway is used to synchronize (combine) parallel flows and to create parallel flows
A Parallel Gateway creates parallel paths without checking any conditions; each outgoing Sequence Flow receives a token upon execution of this Gateway
For incoming flows, the Parallel Gateway will wait for all incoming flows before triggering the flow through its outgoing Sequence Flows

Uncontrolled flow

Diagram 4 above will result in task "Greet Delegates" to be executed three times, hence probably it is not what the modeller intended
Diagram 4 above is equivalent to diagram below

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Deadlocks

Opposite situation may be when exclusive gateway is followed by parallel gateway

Sub-processes

Sub-process boundaries

Sequence flow cannot cross sub-process boundaries.

Activities, Gateways and Loops

Category:NobleProg BPMN Certification Level 1

Ad-hoc

A group of Activities that have no REQUIRED sequence relationships
A set of Activities can be defined for the Process, but the sequence and number of performances for the Activities is determined by the performers of the Activities
Ad-hoc sub-process is marked with a tilde character

Loops

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01.07 - Loops

Multiple Loop Markers

You cannot combine multiple loop markers!

Exclusive Gateway

A diverging Exclusive Gateway (Decision) is used to create alternative paths within a Process flow
Only one of the paths can be taken, this means the gateway is exclusive
A Decision can be thought of as a question that is asked at a particular point in the Process
The question has a defined set of alternative answers
Each answer is associated with a condition Expression that is associated with a Gateway’s outgoing Sequence Flows

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Error creating thumbnail: File missing	Error creating thumbnail: File missing

Inclusive Gateway

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A diverging Inclusive Gateway (Inclusive Decision) can be used to create alternative but also parallel paths within a Process flow
Unlike the Exclusive Gateway, all condition Expressions are evaluated
The true evaluation of one condition Expression does not exclude the evaluation of other condition Expressions
All Sequence Flows with a true evaluation will be traversed by a token
Since each path is considered to be independent, all combinations of the paths MAY be taken, from zero to all
However, it should be designed so that at least one path is taken.

Complex Gateway

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Event Based Gateway

Activities

Category:NobleProg BPMN Certification Level 1

BPMN Activity Basics

An Activity

is work that is performed within a Business Process
can be atomic or non-atomic (compound)
represent points in a Process flow where work is performed
is executable element of a BPMN Process

Activities Type

Task
- an atomic Activity within a Process flow
- is used when the work in the Process cannot be broken down to a finer level of detail
- an end-user or applications are used to perform the Task when it is executed
Sub-Process
Call Activity
- allows the inclusion of re-usable Tasks and Processes in the diagram

Types of Tasks

Type	Icon	Explanation
Receive task	Error creating thumbnail: File missing	Waits for a Message to arrive from an external Participant Once the Message has been received, the Task is completed
Receive start task	Error creating thumbnail: File missing	Starts the process MUST NOT have any incoming Sequence Flow Instantiate attribute MUST be set to true
User Task		A typical “workflow” Task where a human performer performs the Task with the assistance of a software application The task is scheduled through a task list manager of some sort Examples: Phone operator updates customer record User changing their password
Manual Task	Error creating thumbnail: File missing	Is expected to be performed without the aid of any business process execution engine or any application Examples: A telephone technician installing a telephone at a customer location
Business Rule Task	Error creating thumbnail: File missing	Provides a mechanism for the Process to provide input to a Business Rules Engine and to get the output of calculations that the Business Rules Engine might provide
Script Task	Error creating thumbnail: File missing	Is executed by a business process engine The modeler or implementer defines a script in a language that the engine can interpret When the Task is ready to start, the engine will execute the script When the script is completed, the Task will also be completed.

Receive, Manual and User tasks examples

Business Rule and Script Tasks examples

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Business Rule vs Gateways

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Sub-process Markers

A Sub-Process is an Activity whose internal details have been modeled using Activities, Gateways, Events, and Sequence Flows
A Sub-Process is a graphical object within a Process, but it also can be “opened up” to show a lower-level Process

Types of Sub-Processes

Collapsed

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Expanded

Sub-process Markers

Makers can be combined.

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BPMN 2 Workflow Patterns

Category:OCEB B200.3 - BPMN

Category:OCEB T200.3 - Workflow Patterns

Category:BPMN

Category:NobleProg BPMN Certification Level 1

Source: http://www.workflowpatterns.com/documentation/documents/BPM-06-22.pdf

Title: Workflow Patterns
Author: Bernard Szlachta (NobleProg Ltd)

</slideshow>

Workflow (Control Flow) Patterns 。

Basic Control-Flow Patterns
Advanced branch and join patterns
Structural Patters
Multiple instances patterns
State-based patterns
Cancellation patterns

Workflow (Control Flow) Patterns 。

Basic Control-Flow Patterns
- Sequence
- Parallel Split
- Synchronization
- Exclusive Choice
- Simple Merge
Advanced branch and join patterns
- Multi-Choice
- Structured Synchronizing Merge
- Multi-Merge
- Structured Discriminator)
Structural Patters
- Arbitrary Cycles
- Implicit Termination
Multiple instances patterns
- Multiple Instances without Synchronization
- Multiple Instances with a priori Design-Time Knowledge
- Multiple Instances with a priori Run-Time Knowledge
- Multiple instances without a priori run-time knowledge
State-based patterns
- Deferred Choice
- Interleaved Parallel Routing
- Milestone
Cancellation patterns
- Cancel Activity
- Cancel Case

New Control-Flow Patterns

Structured Loop
Recursion
Transient Trigger
Persistent Trigger
Cancel Region
Cancel Multiple Instance Activity
Complete Multiple Instance Activity
Blocking Discriminator
Cancelling Discriminator
Structured Partial Join
Blocking Partial Join
Cancelling Partial Join
Generalized AND-Join
Static Partial Join for Multiple Instances
Cancelling Partial Join for Multiple Instances
Dynamic Partial Join for Multiple Instances
Acyclic Synchronizing Merge
General Synchronizing Merge
Critical Section
Interleaved Routing
Thread Merge
Thread Split
Explicit Termination

Basic Patterns: Sequence

AKA: Sequential routing, serial routing

Basic Patterns: Parallel Split

AKA: AND-split, parallel routing, parallel split, fork

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Basic Patterns: Synchronization

AKA: AND-join, rendezvous, synchronizer

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Basic Patterns: Exclusive Choice

AKA: XOR-split, exclusive OR-split, conditional routing, switch, decision, case statement

Basic Patterns: Simple Merge

AKA: XOR-join, exclusive OR-join, asynchronous join, merge.

Basic Patterns: Multi-Choice

AKA: Conditional routing, selection, OR-split, multiple choice.

Basic Patterns: Structured Synchronizing Merge

AKA: Synchronizing join, synchronizer.

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Basic Patterns: Multi-Merge

AKA: None

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Basic Patterns: Structured Discriminator

AKA: 1-out-of-M join.

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Basic Patterns: WCP-10 Arbitrary Cycles

AKA: Unstructured loop, iteration, cycle.

Structural Patterns

Basic Patterns: Implicit Termination

AKA: None.

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Basic Patterns: Multiple Instances without Synchronization

AKA: Multi threading without synchronization, spawn off facility.

Basic Patterns: Multiple Instances with a priori Design-Time Knowledge

AKA: None.

Basic Patterns: Multiple Instances with a priori Run-Time Knowledge

AKA: None.

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Basic Patterns: Multiple instances without a priori run-time knowledge

AKA: None.

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Basic Patterns: Deferred Choice

AKA: External choice, implicit choice, deferred XOR-split.

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Basic Patterns: Interleaved Parallel Routing

AKA: None.

A set of activities has a partial ordering defining the requirements with

respect to the order in which they must be executed

Each activity in the set must be executed once and they can be completed in any order that accords with the partial order
However, as an additional requirement, no two activities can be executed at

the same time (i.e. no two activities can be active for the same process instance at the same time)

Basic Patterns: Milestone

AKA: Test arc, deadline, state condition, withdraw message.

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Basic Patterns: Cancel Activity

AKA: Withdraw activity.

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Basic Patterns: Cancel Case

AKA: Withdraw case.

Events

Category:NobleProg BPMN Certification Level 1

Start and End Events

Explicit vs Implicit start and end events

Start Event and Pools

Process Trigger

Single Event

Multiple Start Events

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Timer Start Event

Multiple End Events

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Terminate Event

Alternatives to Terminate Event

Terminate event can leave data in an inconsistent state
It should be avoided if possible
Below an alternative to the scenario above

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Intermediate Events

Timer Event

Messages

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Message and Service Task

Messages Quiz

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Exercise

Rewrite the scenario above using 4 intermediate messages

Link Event

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Target must have:
- outgoing sequence flows
- no incoming sequence flows
Target and Source Link Events should have the same name
There should be only one Source corresponding to one target of the same name
Can be used between lanes, but cannot be used between different pools

Boundary Events

Timers

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Messages

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Exercise

Model a sub-process "Write a Report". When employee cannot finish a report in 2 days, you terminate the sub-process and notify the manager
If the message from the client arrives "report not needed", the sub-process should finish without notifying the manager

Non-Interrupting Boundary Events

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Execise

Modell a process "Bake Pizza", if the preparation goes more than 30 min, notify customer wihtout interrupting the sub-process
If the customer (after being notified after 30min) notify the pizza company that they do not want the pizza anylonger, the pizza preparation sub-process should terminate.

Sub-process and Start Event

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Exercises 1

Map the Ordering Pizza in a restaurant processes.
Use names: Customer, Waiter, Chef, pizza order, pizza, money, receipt
Use lanes only (one pool)

Data

Category:NobleProg BPMN Certification Level 1

Data Objects

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Data Store

Public Process

Category:NobleProg BPMN Certification Level 1

Public Process ⌘

Represents the interactions between a private Business Process and another Process or Participant
Only those Activities that are used to communicate to the other Participant(s) are included in the public Process
All other “internal” Activities of the private Business Process are not shown
Public Process shows to the outside world the Message Flows and the order of those Message Flows that are needed to interact with that Process
Public Processes can be modeled separately or within a Collaboration to show the flow of Messages between the public Process Activities and other Participants
Called “abstract” in BPMN 1.2.
Public Process is orchestrated by the private processes (as oppose to Collaboration)

Collaboration ⌘

Depicts the interactions between two or more business entities
Contains two or more Pools
Can be shown as two or more public Processes communicating with each other
The corresponding internal (executable) Processes are likely to have much more Activity and detail than what is shown in the public Processes.

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Nobel Prize

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Exercises 2

Map Pizza Delivery processes.
Use names: Pizza Customer, Pizza Vendor, Chef, Clerk, Delivery Boy, pizza order, pizza, money, receipt
Use two pools (Pizza Customer, Pizza Vendor)

Choreographies and Conversation

Category:NobleProg BPMN Certification Level 1

Choreography ⌘

Definition of the expected behavior
B procedural contract between interacting Participants
A self-contained Choreography have no Pools or Orchestration
Choreography exists between Pools (or Participants)
The Choreography Activities are interactions that represent a set (1 or more) of Message exchanges, which involves two or more Participants
There is no central controller, responsible entity or observer of the Process

Conversation

The Conversation diagram is a particular usage of and an informal description of a Collaboration diagram
Pools of a Conversation usually do not contain a Process and a Choreography is usually not placed in between the Pools of a Conversation diagram
A Conversation is the logical relation of Message exchanges
Message exchanges are related to each other and reflect distinct business scenarios
Conversation Diagram Provides a “bird’s eye” perspective of the different Conversations that relate to the domain

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NobleProg BPMN Certification Level 1 - Complete Materials

Copyright Notice

BPMN 2.0 Purpose ⌘

Audience of BPMN ⌘

Conformance ⌘

Sub-models within an end-to-end BPMN model ⌘

BPMN 2.0 compared to BPMN 1.2 ⌘

BPMN Sub-models ⌘

Private (Internal) Business Process ⌘

Public Process ⌘

Collaboration ⌘

Choreography ⌘

Conversation ⌘

Quiz

Private Process

Simple Process

Exercise 01.01

Process Goals and Outcomes

Exercise 01.02

Process Name

Roles and Lanes

Concurrent Tasks

Uncontrolled flow

Deadlocks

Sub-processes

Sub-process boundaries

Activities, Gateways and Loops

Ad-hoc

Loops

Multiple Loop Markers

Exclusive Gateway

Inclusive Gateway

Complex Gateway

Event Based Gateway

Activities

BPMN Activity Basics

An Activity

Activities Type

Types of Tasks

Receive, Manual and User tasks examples

Business Rule and Script Tasks examples

Business Rule vs Gateways

Sub-process Markers

Types of Sub-Processes

Collapsed

Expanded

Sub-process Markers

BPMN 2 Workflow Patterns

Workflow (Control Flow) Patterns 。

Workflow (Control Flow) Patterns 。

New Control-Flow Patterns

Basic Patterns: Sequence

Basic Patterns: Parallel Split

Basic Patterns: Synchronization

Basic Patterns: Exclusive Choice

Basic Patterns: Simple Merge

Basic Patterns: Multi-Choice

Basic Patterns: Structured Synchronizing Merge

Basic Patterns: Multi-Merge

Basic Patterns: Structured Discriminator

Basic Patterns: WCP-10 Arbitrary Cycles

Structural Patterns

Basic Patterns: Implicit Termination

Basic Patterns: Multiple Instances without Synchronization

Basic Patterns: Multiple Instances with a priori Design-Time Knowledge

Basic Patterns: Multiple Instances with a priori Run-Time Knowledge

Basic Patterns: Multiple instances without a priori run-time knowledge

Basic Patterns: Deferred Choice

Basic Patterns: Interleaved Parallel Routing

Basic Patterns: Milestone

Basic Patterns: Cancel Activity

Basic Patterns: Cancel Case

Events

Start and End Events

Explicit vs Implicit start and end events

Start Event and Pools

Process Trigger

Single Event

Multiple Start Events

Timer Start Event