C Thao Portfolio

By

Chao W. ThaoChao.thao@setfocus.com

651.330.2420

• Windows Front-End Application

• Windows Business and Data Access tiers

• Web Application

Library Table of Contents

Library System Overview• Introduction:

– Designed and implemented a library system to handle day-to-day operations performed by librarians.

• Audience:– Librarians will be the primary users of the applications.

• Project Goals:– Design and develop Windows and Web based applications that

allow librarians to add adult and juvenile members, check in and check out books, and maintain an inventory of the library’s books.

– Design the Entities, Business and Data Access tiers.– Develop code that is easily maintainable.– Provide adequate error handling.– Provide maximum programming flexibility and control while

minimizing resource utilization.

Windows Front-End Application Requirements Develop Windows front-end with 4 functions:

Principal Operations

Add adult member

Add juvenile member

Check in an item

Check out an item

2 projects developed: Windows Client

Validation

Business Layer

Business Rule enforcement

Add Adult Member

Validation in code

Business Layer for Add Adult

Windows Business & Data Access Requirements

Develop stored procedures for 6 processes

Add member

Get member

Check in

Check out

Get item (returns an item with a specific ISBN and Copy #)

Get items (returns a member’s checked out items)

Create a Data Access Layer

Calls stored procedures in database

Returns data or throws errors to Business Layer

Produce a project of Entities classes accessible to all layers

Member

Adult (derived class)

Juvenile (derived class)

Item

ItemsDataSet

Library Exception

Stored Procedure – Adding Juvenile

Data access layer calls add juvenile stored procedure

Entities use for Add Juvenile

Web Application Requirements

Replace Windows front-end with Web front-end

Add Functionality Add Item either with a new ISBN or new copy of an existing ISBN

Automatic Conversion to Adult Membership for Juvenile 18 years and over with notification to Librarian

Membership renewal upon Librarian acknowledgement

Add Security

Add a Librarian role

Add 2 users to the Librarian role

Prevent everyone except the Librarian role from accessing the library functions

Add Item Form and Validations

Add Item Codes

Get Member Info

Get Member Info Codes

Setting Security Role

Login Screen

Summary

– Design and develop Windows and Web based applications that allow librarians to add adult and juvenile members, check in and check out books, and maintain an inventory of the library’s books.

– Develop code that is easily maintainable.

– Provide validation for all required fields.

– Provide error handling

– Produce a user interface that is intuitive, requiring minimal training for users while minimizing resource utilization