Jeff Huber Portfoilio

This document describes a project to create a data access layer and SQL stored procedures to replace those provided in Phase 1 of a library management application. It involved developing entity classes, a data access layer using ADO.NET to call the stored procedures, and stored procedures in SQL Server to handle data validation and retrieval. This allows the business and UI layers to remain unchanged while improving flexibility and scalability in the database. Stored procedures were created to duplicate the functionality of Phase 1 and handle validation and data retrieval through calls to other stored procedures. SQL exceptions in the data access layer are checked by error state to display appropriate messages to users.