Workflow at its simplest is the movement of documents and/or tasks through a work process. More specifically, workflow is the operational aspect of a work procedure: how tasks are structured, who performs them, what their relative order is, how they are synchronized, how information flows to support the tasks and how tasks are being tracked. As the dimension of time is considered in Workflow, Workflow considers "throughput" as a distinct measure. Workflow problems can be modeled and analyzed using graph-based formalisms like Petri nets. While the concept of workflow is not specific to information technology, support for workflow is an integral part of document management and imaging software. Distinction can be made between "scientific" and "business" workflow paradigms. While the former is mostly concerned with throughput of data through various algorithms, applications and services, the latter concentrates on scheduling task executions, including dependencies which are not necessarily data-driven and may include human agents. Scientific workflows found wide acceptance in the fields of bioinformatics and cheminformatics in the early 2000s, where they successfully met the need for multiple interconnected tools, handling of multiple data formats and large data quantities. Also, the paradigm of scientific workflows was close to the well-established tradition of Perl scripting in life-science research organizations, so this adoption represented a natural step forward towards a more structured infrastructure setup. Business workflows are more generic, being able to represent any structuring of tasks, and are equally applicable to task scheduling within a software application server and organizing a paper or electronic document trail within an organization. Their origins date back to the 1970s, when they were purely paper-based, and the principles from that period made the transition to modern IT infrastructure systems. As a way of bridging the gap between the two, significant effort is being put into defining workflow patterns that can be used to compare and contrast different workflow engines across both of these domains. Contents 1 Workflow components 2 Workflow systems 2.1 Workflow specification languages 3 Workflow application 4 See also 5 References 6 External links Workflow components Single steps or components of a workflow can basically be defined by three parameters: input description transformation rules, algorithms output description Components can only be plugged together if the output of one previous (set of) component(s) is equal to the mandatory input requirements of the following component. Thus, the essential description of a component actually comprises only in- and output that are described fully in terms of data types and their meaning (semantics). The algorithms' or rules' description need only be included when there are several alternative ways to transform one type of input into one type of output - possibly with different accuracy, speed, etc.. Especially when the components are non-local services that are invoked remotely via a computer network, like Web services, additional descriptors like QoS, availability, etc. have to be considered, too. Workflow systems Workflow diagram systems are defined as "systems that help organizations to specify, execute, monitor, and coordinate the flow of work cases within a distributed office environment". The system contains two basic components: the workflow modeling component (sometimes called specification module , design environment or build time system) which enables administrators and analysts to define process and activities, analyze and simulate them, and assign them to people. the workflow execution component, sometimes called the run-time system which most often consists of an execution interface seen by end-users and a workflow engine. The workflow engine is an execution environment which assists or performs the coordination of processes and activities. (See also: Load balancing (computing)) Workflow specification languages Workflow diagrams rely on the use of standardized graphical notations to describe workflow structures. The Business Process Modeling Notation or Petri net is an example for these graphical notations. Their language representations cover a wide range: Workflow OSID Job Definition Format Web Service Composition Languages: BPEL, BPML, WSFL, XLANG, SWSL XPDL Windows Workflow Foundation YAWL Workflow application A Workflow Application is where various applications, components and people must be involved in the processing of data to complete an instance of a process. For example, consider a purchase order that moves through various departments for authorization and eventual purchase. The orders may be treated as messages, which are put into various queues for processing. A workflow process involves constant change and update. You can introduce new components into the operation without changing any code. JBoss jBPM is a popular open source workflow application. [1] See also Computer-supported collaboration Business Process Management, Business process modeling Enterprise content management Human interaction management Smart contracts References Layna Fischer: Workflow Handbook 2005, Future Strategies, ISBN 0-9703509-8-8 Layna Fischer: Excellence in Practice, Volume V: Innovation and Excellence in Workflow and Business Process Management, ISBN 0-9703509-5-3 Holly Yu: Content and Work Flow Management for Library Websites: Case Studies, Information Science Publishing, ISBN 1-59140-534-3 Wil van der Aalst, Kees van Hee: Workflow Management: Models, Methods, and Systems, B&T, ISBN 0-262-72046-9 Marlon Dumas, Wil van der Aalst, Arthur ter Hofstede: Process-Aware Information Systems, Wiley, ISBN 0-471-66306-9 Setrag Khoshafian, Marek Buckiewicz: Introduction to Groupware, Workflow and Workgroup Computing, John Wiley & Sons, ISBN 0-471-02946-7 Rashid N. Kahn: Understanding Workflow Automation: A Guide to Enhancing Customer Loyalty, Prentice Hall, ISBN 0-13-061918-3 Dan C. Marinescu: Internet-Based Workflow Management: Towards a Semantic Web, John Wiley & Sons, ISBN 0-471-43962-2 Frank Leymann, Dieter Roller: Production Workflow: Concepts and Techniques, Prentice Hall, ISBN 0-13-021753-0 Michael Jackson, Graham Twaddle: Business Process Implementation: Building Workflow Systems, Addison-Wesley, ISBN 0-201-17768-4 Alec Sharp, Patrick McDermott: Workflow Modeling, Artech House Publishers, ISBN 1-58053-021-4 Toni Hupp: Designing Work Groups, Jobs, and Work Flow, Pfeiffer & Company, ISBN 0-7879-0063-X Gary Poyssick, Steve Hannaford: Workflow Reengineering, Adobe, ISBN 1-56830-265-7 Dave Chaffey: Groupware, Workflow and Intranets: Reengineering the Enterprise with Collaborative Software, Digital Press, ISBN 1-55558-184-6 Wolfgang Gruber: Modeling and Transformation of Workflows With Temporal Constraints, IOS Press, ISBN 1-58603-416-2 Andrzej Cichocki, Marek Rusinkiewicz, Darrell Woelk: Workflow and Process Automation Concepts and Technology, Kluwer Academic Publishers, ISBN 0-7923-8099-1 Alan R. Simon, William Marion: Workgroup Computing: Workflow, Groupware, and Messaging, McGraw-Hill, ISBN 0-07-057628-9 Penny Ann Dolin: Exploring Digital Workflow, Delmar Thomson Learning, ISBN 1-4018-9654-5 Gary Poyssick: Managing Digital Workflow, Prentice Hall, ISBN 0-13-010911-8 Frank J. Romano: PDF Printing & Workflow, Prentice Hall, ISBN 0-13-020837-X James G. Kobielus: Workflow Strategies, Hungry Minds, ISBN 0-7645-3012-7 Alan Rickayzen, Jocelyn Dart, Carsten Brennecke: Practical Workflow for SAP, Galileo, ISBN 1-59229-006-X Alan Pelz-Sharpe, Angela Ashenden: E-process: Workflow for the E-business, Ovum, ISBN 1-902566-65-3 Stanislaw Wrycza: Systems Development Methods for Databases, Enterprise Modeling, and Workflow Management, Kluwer Academic/Plenum Publishers, ISBN 0-306-46299-0 Database Support for Workflow Management, Kluwer Academic Publishers, ISBN 0-7923-8414-8 Clarence A. Ellis: Workflow technology, Computer Supported Co-operative Work, M. Beaudouin-Lafon (ed.), John Wiley & Sons, Chichester, UK, 1999, pp. 29-54 Matthew Searle: Developing With Oracle Workflow External links Workflow Management Research Community Europe Workflow patterns "Knowledge Based Techniques to Increase the Flexibility of Workflow Management" by Barbara Dellen, Frank Maurer, Gerhard Pews The State of Workflow May 2004 article by Tom Baeyens Business Process Modelling vs. Workflow Management Search Term: "Workflow" Categories: Management | Groupware

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