Cool 3 Tier Java database solution


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  1. #1
    russ Guest

    Cool 3 Tier Java database solution


    Found this really cool Java database api at http://www.eazydb.com

    EasyDB is a unique API which provides a way of building web based database
    applications. There are two primary ways of providing this functionality,
    each of which has pros and cons.
    A two-tier architecture consists of a client tier and a database tier. This
    type of architecture most often leads to very large client side code. This
    is not a problem if the client is a stand-alone application. However, this
    presents some very serious performance issues when the client is a web based
    applet. The sheer size of the applet with all the normal database support
    libraries makes this approach very undesirable from a users point of view.
    They must wait for the entire applet to download to their machine before
    they can began to use it. Even though the two-tier approach is somewhat
    easy to use, it does not provide the flexibility needed for a light weight
    web based database application. Furthermore, the data being sent back to
    the client could consist of very large result sets which will also tend to
    frustrate the user if it takes an unusual amout of time.

    A three-tier architecture is similar to the two-tier architecture, except
    that it includes a module that sits between the client and the database.
    This module, or middle tier of this type of architecture, acts as a "middleman"
    in the database communications between the client and the database. This
    approach is by the far the most flexible and is the core concept of EasyDB.
    By having a middle man in our design we can offload all the database access
    to a java servlet or ASP script. This makes our client smaller. In fact,
    the EasyDB client side API adds just over 20k to the overall size of the
    applet! That's almost as impressive as the built-in on-the-fly data compression
    capability of EasyDB. The built in compression can achieve performance gains
    up to 4 times faster than what it takes to receive data from the remote database
    server without compression.



  2. #2
    MarkN Guest

    Re: Cool 3 Tier Java database solution


    This is how I design/build most apps. And have been for a few years. One
    of the biggest pains is installing/maintaining db drivers on the client.

    Mark

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