Petals SAP Point Of Sale System

Third Project PresentationM.Tech Team SE 15 (Saturday) Team 08

17-Jan-2009

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Project Background The OBTECH Asia pacific Pte ltd, Singapore is an

accounting application solution provider and a SAP global partner.

Its clients use a POS system that’s provided by a 3rd party vendor and has many complaints, issues.

The vendor is not ready to accommodate change requests and also not ready to provide source code for doing enhancements.

As a result the company intends to develop a new POS system that shall have the basic POS system functionality and can accommodate future Singapore customer’s requirements.

The project objective is to “develop a client based sales system for retail sales that will integrate with the SAP business one accounting system.”

Project Team

No Name Role

1 David Tan Project Owner

2 Rama Project Manager

3 Ajish QA Manager

4 Wu Xue Song System Architect

5 Zang Yan Technical Lead

6 Zhang Xi Programmer 1

7 Bensam Programmer 2

8 Zhao Zu Qiu Programmer 3

Project Manager(PM)

QA Manager(QM)

Technical Lead(TL)

Programmer 1/2/3(SE)

System Architect(SArch)

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Requirement Overview

SAP B1 HQ

Customer Master Data Inventory Master Data Payment Methods Price List Special Prices Shipping Methods Currency Exchange Rate Tax

FTP

STORE MANAGER POS FRONT

Point of Sale Cash Register Payment Suspend / Recall Peripherals

Stock Reconciliation Item Requisition Day Start User Maintenance Generate Reports Item Exchange Sales Return Refund Cash Register Amend Transaction Maintain Store Data

MASTER DATA CREATION

OUTLET

Day End Transaction Posting

Use Case Modeling : POS

Use Case Modeling : SMS

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Development Strategy

Rational Unified Process OO Language - .NET C# VS.NET 2008 SQL Server 2005 Google Code (svn)

Technical Reports High Level Design

Deployment Diagram

Technical ReportsHigh Level Design

Component Diagram – SPOS Subsystem

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Technical Challenges and Resolutions

Three layers architecture design - complicated than client/server - build on top of .NET framework

(WCF)

UI design with good usability - existing POS systems as reference

(ShengSiong supermarket) - build up UI prototype

Technical Challenges and Resolutions

Development and debugging of client and server in parallel - Predefined WCF service contract and

DTOs. - use a test client program to unit test

server end methods.

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Project Work Effort by Phase

Project Work Effort by Resource

Overall Project Progress

Project Progress from Last Audit

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Management Problem& Mitigation Strategy

Team member’s tight schedule Team have to allocate time for exam,

assignment and daytime work. Short Weekly meetings Focused separate small-group discussions

when needed Offline Discussions conducted using yahoo

online chat, emails, telephone

Management Problem& Mitigation Strategy

Aggressive Project Schedule Detail task breakdown at implementation

phase using Excel sheet Closely monitor schedule De-scope DTS server and DTS client

module Redistribution of work

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Acceptance Process Project team did a POS client demo to

OBTech Project team delivered the source code and

documentation for ObTech developer for further work

OBTech will continue on the DTS-client and DTS-server module development

OBTech will perform UAT testing after DTS module integrated with POS client.

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Acceptance Process Lesson Learnt Q & A

Lesson Learnt

Use google code as CMS -simple, efficient

o Hold yahoo online conference effective way to communicate among

team members

o Refine the process of reviewing document.

review – revise - verify

Lesson Learnt

Should have used a CR tracing system.

efficient

o Make use of .NET WCFo a good framework that separates

the presentation layer and data access layer.

Presentation Overview Project Background Requirement Overview Development Strategy Technical Challenges / Resolution Live Demo Project Progress – Plan Vs Actual Management Problem / Mitigation Strategy Lesson Learnt Q & A