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  2. Sequence diagram - Wikipedia

    en.wikipedia.org/wiki/Sequence_diagram

    The diagram emphasizes events that cross the system boundary from actors to systems. A system sequence diagram should be done for the main success scenario of the use case, and frequent or complex alternative scenarios. There are two kinds of sequence diagrams: Sequence Diagram (SD): A regular version of sequence diagram describes how the ...

  3. Warnier/Orr diagram - Wikipedia

    en.wikipedia.org/wiki/Warnier/Orr_diagram

    A Warnier/Orr diagram (also known as a logical construction of a program/system) is a kind of hierarchical flowchart that allows the description of the organization of data and procedures. They were initially developed 1976, [ 1 ] in France by Jean-Dominique Warnier [ 2 ] and in the United States by Kenneth Orr [ 3 ] on the foundation of ...

  4. Geoffrey Gordon (computer scientist) - Wikipedia

    en.wikipedia.org/wiki/Geoffrey_Gordon_(computer...

    In 1959, he started work on a project to digitally simulate what was seen across flow-chart style simulation sequence diagrams, instead of writing new software for each one. These diagrams used nodes to communicate the flow and operations of a simulation. The project, called the "Sequence Diagram Simulator" was completed at the end of that year ...

  5. Unified Modeling Language - Wikipedia

    en.wikipedia.org/wiki/Unified_Modeling_Language

    A diagram is a partial graphic representation of a system's model. The set of diagrams need not completely cover the model and deleting a diagram does not change the model. The model may also contain documentation that drives the model elements and diagrams (such as written use cases). UML diagrams represent two different views of a system ...

  6. Business Process Model and Notation - Wikipedia

    en.wikipedia.org/wiki/Business_Process_Model_and...

    A Sequence Flow is represented with a solid line and arrowhead, and shows in which order the activities are performed. The sequence flow may also have a symbol at its start, a small diamond indicates one of a number of conditional flows from an activity, while a diagonal slash indicates the default flow from a decision or activity with ...

  7. Jackson structured programming - Wikipedia

    en.wikipedia.org/wiki/Jackson_Structured_Programming

    Note that it in the above diagrams, it is element A that is the sequence or iteration, not the elements B, C or D (which in the above diagrams are all elementary). Jackson gives the 'Look-down rule' to determine what an element is, i.e. look at the elements below an element to find out what it is.

  8. Sequence graph - Wikipedia

    en.wikipedia.org/wiki/Sequence_graph

    Sequence graph, also called an alignment graph, breakpoint graph, or adjacency graph, are bidirected graphs used in comparative genomics. The structure consists of multiple graphs or genomes with a series of edges and vertices represented as adjacencies between segments in a genome [ 1 ] and DNA segments respectively.

  9. Activity cycle diagram - Wikipedia

    en.wikipedia.org/wiki/Activity_cycle_diagram

    The ACD is a modeling tool that was developed in 1960 following the flow diagram method of K.D. Tocher. [2] It pertains to the activity-based paradigm of system modeling, as opposed to process-oriented or event-based paradigms.