Department of Computing and Information Sciences MSE Project Presentation 1 A Three-tier On-line Model For Transaction- based Applications Using VB.NET

Department of Computing and Information Sciences

MSE Project Presentation 1MSE Project Presentation 1

A Three-tier On-line Model For Transaction-based Applications Using VB.NET

Technology

By Lian Li

Committee: Dr. William Hankley (Major Advisor)

Dr. Gurdip Singh

Dr. Mitchell Neilsen


AcknowledgementAcknowledgement

Thank:

Dr. William Hankley

Dr. Gurdip Singh

Dr. Mitchell Neilsen


Overview of the PresentationOverview of the Presentation

Project Overview Major Contribution Project Plan Requirements Tools and Approaches Prototype Cost Estimation Reference


Overview - Three-tier ModelOverview - Three-tier Model

Structure of the Model for this project


Overview – Objective of the ProjectOverview – Objective of the Project

Developing a 3-tier on line College Enrollment System (CES) as well as tutorial with examples, snap shots, instructions to serve students to grasp VB.NET in a possible short time.

There are two deliverables: The program The tutorial


Overview - ADO.net, ASP.netOverview - ADO.net, ASP.net

ADO.NET – An extension of Microsoft’s ActiveX Data Objects that enables .NET applications to access and manipulate database.

ASP.NET – An integral technology for creating dynamic Web content marked up as HTML. Web Forms provide GUIs for ASP.NET pages and can contain Web Controls, such as labels, buttons and text boxes with which users interact.


Major ContributionMajor Contribution

Three-tier model set up in VB.net The tutorial with examples, snap shots

and instructions/guide for future students

The framework established in this project can be applied to the small business environment


Project PlanProject Plan


RequirementsRequirements

Log into the CES system as a student or registrar with appropriate userid and password

A student enrolls a course by selecting the course list A registrar updates student information A registrar updates course information A registrar add a student information A registrar add a course information A student view enrollment information A student drop a course


ToolsTools

Oralce9i (version 9.2) located on Unix box ASP server as the web server MS Visual Studio .NET 2003 as the

development IDE ADO .Net for communication development

between client and databases ASP .Net serves web development


Approaches – Domain ModelApproaches – Domain Model

Course

courseNum : IntegercourseTitle : Stringdepartment : String

getCNum() : IntegergetCTitle() : StringsetCNum(Integer num)setCTitle(String title)getDept() : StringsetDept(String dept)

Enrollment

enroll(String ssn, Integer ref)addCourse(String ssn, Integer ref)dropCourse(String ssn, Integer ref)

Domain Model (Conceptual Model) DesignOct. 1

Student

ssn : Stringlname : Stringfname : String

getSSN() : StringgetLname() : StringgetFname() : StringsetSSN(String ssn)setLname(String l)setFname(String f)

Section

referenceNum : Integerdate : Datesemester : Integeryear : Integerinstructor : String

getRef() : IntegersetRef(Integer ref)getDate() : DatesetDate(Date d)getYear() : IntegersetYear(Integer y)getInstructor() : StringsetInstructor(String i)

0..*

0..*

0..*

0..*

enrollIn


Prototype 1Prototype 1


Prototype 2Prototype 2


Cost Estimation – LOC BasedCost Estimation – LOC Based

Total LOC estimate = 1/6(sum of Max + sum of mix + 4*(sum of best guess))

Total estimate LOC of this project: 3650


Cost Estimation -COCOMOCost Estimation -COCOMO

Application Program Calculation:PM = 2.4 * (KDSI)1.05

= 2.4 * 3.61.05

= 9.2 (person-month)

TDEV = 2.5 * (PM)0.38

= 2.5 * 9.20.38

= 5.8 (month)


Cost Estimation – FP BasedCost Estimation – FP Based

Simple Average Complex

Sub-TotalCount Weights Count Weight

sCount Weight

sInputs 0 3 7 4 1 6 34

Outputs 6 4 0 5 0 7 24

Inquiries

0 4 3 5 0 7 18

Files 0 7 3 10 0 15 30

Interfaces 0 5 0 7 2 10 20

Total 126


Cost Estimation – Adjusted FPCost Estimation – Adjusted FP

Complexity Weighting Factors Rate (1-5)

Does the system require reliable backup and recovery 1

Are data communications required? 3

Are there distributed processing functions 2

Is performance critical 4

Will the system run in an existing, heavily utilized operational environment 3

Does the system require on-line data entry? 4

Does the on-line data entry require the input transaction to be built over multiple screens or operations

3

Are the master files updated on-line 4

Are the inputs, outputs, files, or inquiries complex 5

Is the internal processing complex 4

Is the code designed to be reusable 3

Are conversion and installation included in the design 4

Is the system designed for multiple installations in different organizations 4

Is the application designed to facilitate change and ease of use by the user 4

Sum 47


Cost Estimation – Adjusted FP (cont’)

Cost Estimation – Adjusted FP (cont’)

Adjusted FP

= FPunadjusted*(.65+.01*sum of ratings)

= 126 * (.65+.01*47)

= 141.12

TDEV = 4 month (40 Function Points per man month)


ReferencesReferences

H.M. Deitel, P.J. Deitel, Visual Basic. NET: How to Program, 2nd Edition, Prentice Hall, 2002

R.S. Pressman, Software Engineering: A practitioner’s Approach, 6th Edition, Mc Graw Hill, 2005

Visual Basic .NET complete, San Francisco : Sybex, c2002 L. Bernstein and A. Lubashevsky, "Living with Function Points", in Software

Management, 5th Edition, 1997 David Gustafson, Schaum’s Outlines: Software Engineering, McGral-Hill,

2002 http://www.startvbdotnet.com/extras/vbdotnet.htm http://www.johnsmiley.com/visualbasic/vbhistory.htm http://www.devasp.net/net/search/display/category292.html http://www.projectperfect.com.au/info_fp_oview.php


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Department of Computing and Information Sciences MSE Project Presentation 1 A Three-tier On-line Model For Transaction- based Applications Using VB.NET