Workflow Elements

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

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Loops

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01.07 - Loops

Multiple Loop Markers

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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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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

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