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Help with this questions

Discussion in 'Databases' started by Liz Lazu, Sep 24, 2016.

  1. #1
    1.What are the differences and similarties between Entity Relationship Diagram, Data Flow Diagram and Use Case Diagram?
    2. Where can be used?
    I have no idea with this. It is my assignment, but I try to google without explaination.
    SEMrush
     
    Liz Lazu, Sep 24, 2016 IP
    SEMrush
  2. PoPSiCLe

    PoPSiCLe Illustrious Member

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    #2
    These are different visualisations of entities (for instance tables, or rows in tables in a database),of data flow (how data is input and fetched from the database), and use cases are specific ways the data is used in the application. For instance a new user is entered into the database via a form, and when you view a list of the users registered in the database, you'll also see the latest added user.
     
    PoPSiCLe, Sep 25, 2016 IP