VB 6.0 to .NET Migration

Objective: Replatforming enterprise Logistics / ERP / Sales / Accounting System to .NET – End-to-End

Download PDF
Acrobat Reader
File Size: 512 KB

World-class N-tier Web Based business applications Application using .NET Technology
Service Oriented Architecture (SOA) Based Architecture
Reduce overall business costs
Separation of Database Specific API from the .NET Code
Reusable Component Based Architecture

Existing Application

The Challenges

UI elements were being directly referred in the Business Layer resulting in difficulty in conversion to .NET as certain controls in the UI are not easy to convert.
The objects generated as result of Existing Data Access Layer were not thread safe.
The business logic was not very well consolidated.
Existing architecture lacked support for SOA, flexibility and extensibility
Typical Challenges of Desktop Application (Navigation, Dedicated DB Connections, Application Distribution)
Licensing issues due to Citrix.
Deployment issues to multiple client installation.

Re-Platform Key Objectives

N-tier web based application using .NET technology
WEB farm using IIS6.0
SOA based architecture.
Web Services for integration with external systems
Framework based on MVC Architecture
Dynamic Page generation capability
Dynamic invocation of business layer. (Developer would just Code the business layer and configure the hooking through XML).
Making Maximum use of Existing Code.
Add functionality without Framework Recompile!
A Flexible Validation framework
Flexibility to Add Smart Clients.
Scalable.
Separation of Database Specific API from the .NET Code
Reusable Component Based Architecture

Impacted Business Lines

Number of Users
3000 users

Number of Concurrent Users
1500

Project Duration
24 Months (in progress)

Project Effort
120,000 Hours

Existing Application Line of Code
2 MLOC