Assignment Details

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).

Assignment Guidelines

Phase 2 individual project

• 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. 

Unit 3 IP

• Add the following to the Phase 2      individual project:
  • Add a new Windows Communication       Foundation (WCF) service library project to the Phase 2 individual       project to communicate with the Data Access tier.
  • 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.
  • Add references in the Data Service       to the Data tier and Data Access tier projects.
  • 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 Unit 3 IP, 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.