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Question on activity diagram for source to destination flow

  • June 13, 2016 at 1:42 pm

    #319468

    Hello,

    I have an ssis package, where I am documenting into an activity UML flow diagram.

    I have a quick question. In my control flow pane I have 2 data flow task

    In one dataflow task I have oledb source and oledb destination and in another data flow task 2 same thing oledb source and oledb destination.

    My question is when I am drawing my flow I have taken one dataflow task and pointing my arrow to source and again pointing my arrow to destination there I ended up

    Do we need again point arrow from destination to dataflow task ? because what I thought is like after completing the first dataflow task it will come to second data flow task to process right?

    and next line I have taken another data flow task and joined data flow task 1 to 2..

  • June 13, 2016 at 2:24 pm

    #1884777

    If there are no precedence constraints between the two dataflow tasks on the control flow tab, they will execute in parallel. Does that answer your question?

    The absence of evidence is not evidence of absence.
    Martin Rees

    You can lead a horse to water, but a pencil must be lead.
    Stan Laurel

  • June 13, 2016 at 2:27 pm

    #1884778

    There is precedence constraint between two data flow tasks.

    Once first data flow task is finished transferring data from source to target its coming to second data flow task.

  • June 13, 2016 at 2:31 pm

    #1884780

    mcfarlandparkway (6/13/2016)

    There is precedence constraint between two data flow tasks.

    Once first data flow task is finished transferring data from source to target its coming to second data flow task.

    OK. Then DF1 executes first, followed by DF2.

    The absence of evidence is not evidence of absence.
    Martin Rees

    You can lead a horse to water, but a pencil must be lead.
    Stan Laurel

  • June 13, 2016 at 2:37 pm

    #1884782

    Yes,Exactly.

    So when I am doing a flow diagram when first part of data flow task is done do I need to connect arrow from destination to data flow task 1 ?

    or simply end up at destination. Just connect data flow task1 to data flow task 2 ?

  • June 13, 2016 at 2:53 pm

    #1884783

    DF1 starts, executes and finshes and then DF2 does the same. How you diagram that is up to you.

    The absence of evidence is not evidence of absence.
    Martin Rees

    You can lead a horse to water, but a pencil must be lead.
    Stan Laurel

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