Validation


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Thread: Validation

  1. #1
    Marcia Guest

    Validation


    I'm just starting with Java and my first duty is to do the validation for
    the application.
    The group I'm working with wants to have a server side validation and not
    client side validation with Java Script.
    Well I'm a back end programmer in VB, and C++, in my experience a safe and
    reliable application must have both client and server validation.
    Can someone clarify to me why my group believes that just server validation
    is enough, or I'm wrong and a 100% java application does not need client
    validation.

    Thanks


  2. #2
    Paul Clapham Guest

    Re: Validation

    As far as quantity of validation is concerned, I don't see that it makes a
    difference where it is done. There are various technical reasons why you
    might want to do a particular validation on the client or on the server, but
    as long as it gets done in at least one place, I don't have a problem with
    it.

    For example: suppose your client has an HTML form that asks you to enter a
    product number. Where should you validate that? If it requires a database
    lookup, and your server program is already accessing the database, then the
    server should do the database lookup. Should the client pre-validate it,
    using Javascript, to check that what was entered was a number and not zero?
    It's possible, but then you have two different styles of error message being
    presented to the user. A system designer might reject that possibility and
    opt to have all validation on the server, resulting in consistent
    presentation of error messages.

    Marcia <isoint@msn.com> wrote in message news:39bfda61@news.devx.com...
    >
    > I'm just starting with Java and my first duty is to do the validation for
    > the application.
    > The group I'm working with wants to have a server side validation and not
    > client side validation with Java Script.
    > Well I'm a back end programmer in VB, and C++, in my experience a safe and
    > reliable application must have both client and server validation.
    > Can someone clarify to me why my group believes that just server

    validation
    > is enough, or I'm wrong and a 100% java application does not need client
    > validation.
    >
    > Thanks
    >




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