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Workflow Terminology, Standards, and Requirements

Workflow Terminology, Standards, and Requirements. Part one, terminology. Topics. What is workflow? What domains does it cover? What is its relationship to middleware?. Workflow history. When “computer” meant a person that performed a series of computations (WWII)

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Workflow Terminology, Standards, and Requirements

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  1. Workflow Terminology, Standards, and Requirements Part one, terminology

  2. Topics • What is workflow? • What domains does it cover? • What is its relationship to middleware? 2

  3. Workflow history • When “computer” meant a person that performed a series of computations (WWII) • 1970s when paper based processes were duplicated in IT systems 3

  4. A definition • The workflow paradigm provides the ability to orchestrate a series of actions constrained by rules. Unlike other paradigms it also provides tracking or tracing, and flexible flow control. • The workflow paradigm also supports state persistence over a relatively long period of time. 4

  5. Business Often document centric Marshalling task executions Examples: Processing travel vouchers, purchase orders Grant proposal submission Scientific Marshalling multiple data formats interacting with multiple interconnected tools Examples: Bioinformatics Cheminformatics Workflow Application Domains 5

  6. Workflow and Middleware • Thesis 1: To extend the workflow paradigm across multiple systems, the activity processing must interact with authentication, authorization and directory services, hopefully provided by an existing middleware infrastructure. • Thesis 2: Workflow can be used to facilitate the management of IdM and AuthZM systems. 6

  7. Rules Activities Chains Loops Forward chaining Runtime transparency Tracking, tracing, status monitoring Flexible flow control Some Common Terminology 7

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