The company has asked you to build a prototype of an n-tier system using the Northwind database as an example. The company wants to be able to add, edit, and delete records from the customers, orders, order details, products, categories, and suppliers tables. Your instructor will provide you the online link to the SQL Server database files (MDF and LDF).

  • Create the Data Access tier and Data tier projects:
    1. Create a class library project for the Data tier.
    2. Add a new class library project the project created in Step 1 for the data access tier.
    3. Add a typed DataSet using a new data source that connects to the Northwind sample database.
    4. Select the database objects (customers, orders, order details, products, categories, and suppliers) tables.
    5. Make sure the TableAdapters are stored in the Data Access tier and the DataSet class is added to the Data tier.
  • Make sure that separate tiers are created for each layer by verifying that separate class libraries were created and the necessary references to the project were added.

Using the project you started, verify the business logic layer (middle tier) is working correctly and make the connection to the database, implementing the logic in the data layer provided to manipulate the data stored in the database portion of the n-tier system.

  • Add the following to the project:
    1. Add a new Windows Communication Foundation (WCF) service library project to the Phase 2 individual project to communicate with the Data Access tier.
    2. Add the necessary queries and methods to the table adapters that will return, add, edit, and delete the data from the tables specified in Phase 2.
    3. Add references in the Data Service to the Data tier and Data Access tier projects.
    4. Add methods to the Data Service class created in Step 1 that will call into the Data Access tier.
  • Make sure that separate tiers are created for each layer by verifying that separate class libraries were created and the necessary references to the project were added.

Using the project you worked on in the Phase 2 of the project, finalize the design and functionality of the graphical user interface (presentation tier) and business and data access layers to prepare the Windows form application for deployment to a production server. Test the application by adding, editing, and deleting records in each table.

  • Add to and perform the following on the Phase 2 of the project:
    • Add a Visual Basic Windows Form Application Project to the project created in Phase 3 that will serve as the Presentation tier (user interface that includes the programming of business logic into various form controls).
    • Set the Presentation tier project to be the Startup project.
    • Add a reference in the Presentation tier to the Data tier project.
    • Add a service reference in the Presentation tier to the Data Service.
    • Add the necessary Data Grid controls and graphical user interface controls to show the data from the selected tables.
    • Make the data show up automatically when the form loads.
    • Increase the maximum received message size in the app.config file to support the data.
  • Be sure to test the functionality of the application.

In this portion, you will be preparing for system deployment and security. In the portion of this project, you will create the Distributed System Deployment and Testing Plan, which will act as a form of communications and operations policy.

  • Create a 5-page Distributed System Deployment and Testing Plan that includes the following:
    1. System overview
    2. Scope and objectives
    3. Test phases and cycles
    4. Resources
    5. Roles and responsibilities
    6. Error management
    7. Operational and communications policies
  • Be sure to reference all sources using APA style.

Make sure that the purpose of each section is stated clearly and that the Distributed System Deployment and Testing Plan serves as form of communication and documentation for the application project.

Here is a tutorial since this is a Windows Form Application Project: https://docs.microsoft.com/en-us/visualstudio/data…

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