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  1. Architecture of Web Service

    by , 07-07-2012 at 07:43 PM
    Following diagram explains the architecture of the web servers.

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    Web Service Architecture

    • Web Service Discovery: All the web services are discovered with the help of this part by meeting certain requirements and passing filters. The UDDI which stands for Universal Description, Discovery and Integration handles this part of web services.

    • Web Service Description: All the web services are self describing which ...
  2. Apache POI Architecture

    by , 02-24-2012 at 07:38 PM
    Apache POI project consist of the following components.

    • Poor Obfuscation Implementation File System (POIFS): It is involved in writing and reading the format of the MS OLE 2 Compound document. All MS Office files are basically OLE files and this component is POI element’s basic building block. POIFS assist to read variety of files.
    • Horrible SpreadSheet Format (HSSF): Microsoft Excel (XLS) format file are read and written by it. Files could be read by it which is being written
    Apache POI
  3. The advantages of a 3-tiered or n-tiered application

    by , 01-01-2012 at 03:27 PM
    Multi-tier or 3-tier architectures compel separation between business logic, presentation logic and database logic. Few important benefits are detailed over here:

    Manageability: Every tier can be upgraded, monitored or tuned independently & different duties could be assigned to different tiers.
    Scalability: More hardware could get added up and also permits the clustering that is horizontal scaling.
    Maintainability: Up gradation or other changes are performed ...