30 October 2019

Short Notes : Activities in BPMN

بِسْمِ اللّهِ الرَّحْمَنِ الرَّحِيْمِ
اللهم صل على محمد وآل محمد
السَّلاَمُ عَلَيْكُمْ وَرَحْمَةُ اللهِ وَبَرَكَاتُه



What is an activity, a task and a sub-process?

What are activities?
- Represented as rounded rectangles
- Signify the work performed by an organisation
- Uses resources such as time

Type of activities
- Task : atomic activity 
- Sub-process : compound activity

Task include :
- User
- Script
- Service
- Send
- Receive
- Manual

Sub-process include : 
- Embedded
- Reusable

> User task : an activity performed by a person or user with the help of system or software.

> Service task : activity performed by system without human intervention. 

> Script task : an activity that executes an expression.

Sub-process
- a compound activity included within a process (parent process)
- collection of activities
- logical sequences
- can be represented as collapsed or expanded.
- collapsed : sub-process detailed are not displayed
- expanded : sub-process detailed is diplayed
- two classification which are embedded and reusable.

Embeded - signifies the sub-process depends completely on the parent process.
> structurally part of the parent process
> Cannot contain pools or lanes
> Can only use a none start event
> All process data used in the parent process is directly accessible by the embedded sub-process.


Reusable - defined process like another business process diagram, and does not depend on the parent process.
> an independent process that can be called as a sub-process from different parent processes
> does not depend on a particular parent process and may be used in multiple business contexts without any alteration.
> can be a high level process or a sub-process

اللهم صل على محمد وآل محمد
(Allahumma salli 'ala Muhammad wa ali Muhammad)
سُبْحَانَ اللّهِ وَ بِحَمْدِهِ ، سُبْحَانَ اللّهِ الْعَظِيمِ
(SubhanAllahi wa biHamdihi, SubhanAllahil adzim)
سبحانك اللهم وبحمدك أشهد ان لا إله إلا أنت أستغفرك وآتوب إليك
(Subhanakallahumma wabihamdika asyhadu allaailaaha illa anta astaghfiruka wa atuubu ilaika)

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