A Software Engineering Project on

CYBER CAFE MANAGEMENT SYSTEM

Project submitted to

K L University under the partial fulfilment of

B.Tech (II Year) during 2016-17

By

S.V.Rohith-150031000 section-03

N. Anirudh-150030041 Batch-13

Under the guidance of

Dr. B. Vijay Babu

K.L. UNIVERSITY

Green fields, Vaddeswaram, Guntur Dist.522502

DECLARATION

We hereby declare that the project entitled “Cyber

Cafe management system” is done and submitted by ‘S.V.Rohith’, ’N.Anirudh’

under partial fulfilment of the requirement for the award of degree of B.TECH in

“SOFTWARE ENGINEERING” in COMPUTER SCIENCE DEPARTMENT is a

bonafide project work carried out under the guidance of Dr. B. Vijay Babu. This

project is processed using star UML which is the advanced version of designing the

software. The present project presented in:-

1. Use case diagram

2. Sequence diagram

3. Activity diagram

4. Class diagram

Place: KLU Signature of the team

Date: 150031000

150030041

___________________

Signature of the Faculty

INDEX

S.NO CONTENTS

1. Introduction

2. Modules

3. Advantages and disadvantages

4. Structure and functioning

5. Use case Diagram

6. Sequence Diagram

7. Activity Diagram

8. Class Diagram

9. testing and conclusion

Introduction

Cyber Café Management is a complete package developed for management

of systems in a cyber café. This project is intended to be used in a Cyber

Café. All cyber cafes have some basic needs likeable to control the systems

that are being rented to the customers and are charged on timely basis.

A Cyber café normally has some number of PC’s which the customers will for

certain amount of time. Now days it may also require to save some details of

the customers for security reasons. When a customer enters a cyber café he

has to be allotted a PC and the start time is noted. At any time the cyber

administrator should be able to see the status of any PC, when the customer

wants to do some other activities like taking a print out or scan a copy etc. It

should be recorded. And finally all the details will be available to the Cyber

administrator. And he can submit on the form to generate the bill. There

should be displays of all the transactions taking place in the café.

Structure of the program:

This project basically contains two types of users: the server user and the

client user.

The Server user is the administrator of the Server machine who has the

right to monitor each and every client or customer. He will have the

rights to remotely login or logout the client user. He solely controls the

Server machine.

The Client user is the customer for the cyber. He can login to the client

system and start browsing only if he is authenticated (by username and

password) otherwise the Admin user can log him in remotely.

There can be multiple clients interacting with the server, sending multiple

requests at the same time.

TOOLS USED

Star UML

It is a UML tool by MKLab. The software was licensed under a modified version of GNU GPL until 2014, when a rewritten version 2.0.0 was released for beta testing under a proprietary license. After being abandoned for some time, the project had a revival to move from Delphi to Java/Eclipse and then stopped again.

Computer

Any pc can be used irrespective of the operating system since it’s compatible with Mac, Windows, and other Linux divisions

Module Description:

1. Admin Module:

1.1 Connection Module This module is supposed to open a socket connection and keep the socket in

wait mode until it receives some request from the client side. Once there is

some request coming in from the client, it should receive the data and perform

appropriate functions.

1.2 User Creation and Management This module should implement the user creation and management. The users

could be given a username and password and also they could be given a

prepaid account by which they can browse until they finish the amount in their

accounts.

This module comprises five sub modules:

Add records: This module deals with adding or storing the customer

details which includes his/her user name, password,timeplan etc,.

Get customer log information: This module deals with retrieving the

details about the current customer after his each or after he completes

his session.

Display all records: This module allows the admin to view or keep track

of all the customer details either on basis of type of user, or on basis of

weekly or monthly.

Time plan: The customer here is offered two choices to make for the

time plan that is prepaid and Post-paid. The browsing charge for

prepaid users will be deducted from his/her account while the post-paid

users will have to make the entire payment by cash in accordance to his

browsing time.

Active users: This module gives the information about the logged in

users and the comp that they are logged into.

1.3 Billing this module should produce bills depending upon the user activity and hence

generate a report comprising all the requisites, regarding the customers

session. Here the post-paid customer makes full payment, comprising charges

for his browsing time as well as other services seeked such as items

purchased, refreshments, scanning, printing etc,. While the prepaid customer

will pay for the extra services seeked other than browsing time as the due

deduction for browsing will be done through his account.

2. Client Module:

2.1 Client Connection This module will try to establish connection with the server. If the connection is

successful then he will be able to use the client system. The connection

request is made on the server that is available on the network, If the server is

not running or if he is not authenticated then he will not be able to use the

client system.

2.2 Client Requests this module will allow the customer of the cyber café to make request’s for

some of the items that are predefined and will be displayed on his screen.

These requests will be shown up server screen and the admin provides the

customer with the requested services to his place.

Future scope of the project:

The aim of our project is to replace the paper works & works done

manually and to automate the existing trend in the cyber café. Be it user

creation, their management or bill generation, everything is

computerized. Since the admin job is done effortlessly and at the same

time the customer can enjoy his browsing time entirely, hence both the

user and the owner are at their ease.

We have limited the server and the client into a single system. For real-

time purposes we can extend the software by installing the server

components into a single system and have multiple clients by installing

the client components into many systems. Here multiple clients can

interact with the single server at the same time sending in multiple

requests simultaneously.

Nowadays Cyber Crime has increased immensely. So in order to avoid

the risk of getting indulged in any scandals regarding cyber crime we

can implement the FINGER PRINTING Mechanisms in the cyber for the

authentication of the clients or customers of the cyber.

The acceptance of CREDIT and DEBIT CARDS for the payments can

make the software more versatile. Allowing the point of sale concept at

the cyber café can be another attractive feature of the software.

Advantages

Print-monitoring:

monitors all the printer queues available on the server machine and

stores the document names and other details of all the documents

printed. This feature has certain limitations.

Internet connection monitoring

the connectivity to the Internet is monitored and the data is presented in

the form of a graph.

Customizable screens

The Customer Login and Logout screens can have a background

designed by you.

Check status from anywhere on web

Figures like the number of clients in session, the total number of clients

connected, the total amount collected after the last settlement etc., can

be availed online from anywhere in the world from our website.

Standard time maintenance

the server time is synchronized with our main Server and all the clients

get synchronized with the server, thus ensuring that the records are

time stamped accurately.

Your own currency and date settings

Cafezee reads the currency and the date settings from the Windows

Regional Settings, which can be modified according to your region.

Restricted Windows access and Internet Explorer options

The Windows Control Panel, Network Neighbourhood, Display settings

etc., can all be locked away from customer or staff access, thus

reducing the maintenance costs drastically. Even the Internet Explorer

settings can be restricted so as to prevent unauthorized alteration to i ts

interface. Disk drives can be hidden and downloads disabled.

Auto-Closes applications and active-downloads when customer leaves

It can automatically close all the applications and downloads started by

a customer once he logs out. This helps avoid embarrassing moments

from objectionable sites left behind by the previous customer. Also, this

helps in optimizing the available bandwidth by stopping all the

downloads started by the customer.

Allowed Applications

it allows the users to use some applications without starting their

session. These applications can be specified using the Allowed

Applications feature.

Banned Applications

you can use this option to restrict users from accessing specified

applications and web-sites.

An automatic database backup

It regularly makes backup copies of its database in the local drive itself,

and also automatically repairs any errors in the database. The print

monitoring and connectivity data is cleaned up at regular intervals.

Database is encrypted and protected

the database is encrypted and password protected so that nobody can

tamper the data records.

Disadvantages

PRIVACY

The biggest concern for most PC users is privacy. Wi-Fi hotspots in most

public areas are unsecured, which means that others could potentially access

information on your computer. If you forget to log out of a public computer

terminal, someone could access your email or other sensitive accounts. On a

physical level, the person next to you in an Internet cafe can easily look over

your shoulder. Internet cafes or public terminals are not ideal for sensitive or

work-related information.

PERFORMANCE

Internet cafes geared toward gaming have high-performance computers. Most

PC games have much higher requirements than the average personal computer. If you play the game at an Internet cafe, you will enjoy the game at

its full optimization without the burdensome cost of buying a special gaming

PC. The Internet speed at gaming cafes is also much faster than the average

home Internet speed, which reduces lag and timeouts from interrupted

Internet connections.

COST

The cost of Internet at cyber cafes is relatively low and varies between

countries. Most places charge hourly, though some offer a one-time purchase

fee. If you are travelling, purchasing an hour at an Internet cafe to write home

is significantly cheaper than paying for a monthly satellite fee. As Wi-Fi grows

in abundance, more businesses are offering free Internet access to attract customers.

COMFORT AND CONVENIENCE

Most Internet cafes are not as comfortable as your own home. The cafe could

be crowded, smoky or have uncomfortable seats, making it difficult to

patronize the cafe for hours on end. Most Internet cafes in the West are not

open 24 hours, which limits your time for work or recreation. Downloads might be restricted to preserve bandwidth.

Structure and functioning

1. Server Connection: This feature opens a socket connection & enters wait

mode unless it receives any requests coming from the client side.

2. User Creation & Management: This feature implements creation of

different kinds of users & their management.

3. Add records: This feature deals with adding or storing the customer

details which includes his/her username, password, time plan etc,.

4. Get customer log information: This feature deals with retrieving the details

about the current customer after each session.

5. Display all records: This feature allows admin to keep track of the entire

customer & his/her details either on daily, monthly, yearly basis.

6. Time plan: This feature allows the client to make a choice from the time

plan offered i.e. either prepaid or post-paid.

7. Active users: This feature displays the entire logged in client & the

computers to which they are logged into.

8. Client connection: This feature establishes a connection between server

& the client.

9. Client request: This feature enables the client to make request for the

services provided by the cyber.

Hierarchical structure of modules:

First level factoring:

Factoring of admin module:

v.p=valid password

r.u=request for user creation

r.b=request for billing

d.r=display records

g.t=get timeplan

a.u=active users

g.l=get customer log information

a.r=add records

r=retrieve bill details

c.b=calculate bill

g.b=generate bill

Client module:

r.pr=request for Prepaid

r.po=request for Post-paid

c=choose package

r.c=register client

r.li=request for login

r.lo=request for logout

b=browse

r=request for services

Use case Diagram

1. Introduction of UML diagrams:

Unified Modelling Language (UML) is a general purpose visual

modelling language.

Can support all existing lifecycles.

Intended to be supported by CASE tools.

Unifies past modelling techniques and experience.

Incorporates current best practice in software engineering.

UML is not a methodology!

UML is a visual language.

UP is a methodology.

UML Structure:

UML building blocks.

Common mechanisms.

Architecture.

UML building blocks:

Things

Modelling elements.

Relationships

Tie things together.

Diagrams

Views showing interesting collections of things.

Are views of the model?

Relations:

Common mechanisms:

UML has four common mechanisms that apply consistently throughout

the language:

Specifications.

Adornments.

Common divisions.

Extensibility mechanisms.

Architecture:

Use case modelling:

Use case modelling is a form of requirements engineering.

Use case modelling proceeds as follows:

Find the system boundary.

Find actors.

Find use cases.

- Use case specification.

- Scenarios.

What are actors?

An actor is anything that interacts directly with the system.

Actors identify who or what uses the system and so indicate where the

system boundary lies.

Actors are external to the system.

An Actor specifies a role that some external entity adopts when

interacting with the system.

Identifying Actors:

When identifying actors ask:

Who or what uses the system?

What roles do they play in the interaction?

Who installs the system?

Who starts and shuts down the system?

Who maintains the system?

What other systems use this system?

Who gets and provides information to the system?

Does anything happen at a fixed time?

What are use cases?

A use case is something an actor needs the system to do. It is a “case

of use” of the system by a specific actor.

Use cases are always started by an actor.

The primary actor triggers the use case.

Zero or more secondary actors interact with the use case in some

way.

Use cases are always written from the point of view of the actors.

More relationships :

We have studied basic use case analysis, but there are relationships

that we have still to explore:

Actor generalisation.

Use case generalisation.

«Include» – between use cases.

«extend» – between use cases.

«Include»:

The client use case executes until the point of inclusion:

include(SupplierUseCase)

Control passes to the supplier use case which executes.

When the supplier is finished, control passes back to the client

use case which finishes execution.

«extend» :

«extend» is a way of adding new behaviour into the base use case by

inserting behaviour from one or more extension use cases.

The base use case specifies one or more extension points in its

flow of events.

The extension use case may contain several insertion segments.

Implementation of cyber cafe management system in Use case

diagram.

1. Admin module

2. Client module

3. Internet management

Sequence Diagram

Sequence diagrams

Emphasize time-ordered sequence of message sends.

Show interactions arranged in a time sequence.

Are the richest and most expressive interaction diagram.

Does not show object relationships explicitly - these can be

inferred from message sends.

Communication diagrams

Emphasize the structural relationships between lifelines.

Use communication diagrams to make object relationships

explicit.

Interaction overview diagrams

Show how complex behaviour is realized by a set of simpler

interactions.

Timing diagrams

Emphasize the real-time aspects of an interaction.

Interactions:

Interactions are units of behavior of a context classifier.

In use case realization, the context classifier is a use case.

The interaction shows how the behaviour specified by the use

case is realized by instances of analysis classes.

Interaction diagrams capture an interaction as:

Lifelines – participants in the interaction.

Messages – communications between lifelines.

Lifelines have:

Name - the name used to refer to the lifeline in the interaction.

Selector - a Boolean condition that selects a specific instance.

Type - the classifier that the lifeline represents an instance of.

Messages: A message represents a communication between two lifelines.

Implementation of the SEQUENCE diagram

Customer module:

Activity Diagram

Activity diagrams are "OO flowcharts"!

They allow us to model a process as a collection of nodes and edges

between those nodes .

Use activity diagrams to model the behaviour of:

use cases.

Classes.

Interfaces.

Components.

Collaborations.

operations and methods.

business processes.

Activities:

Activities are networks of nodes connected by edges.

There are three categories of node:

Action nodes - represent discrete units of work that are atomic

within the activity.

Control nodes - control the flow through the activity.

Object nodes - represent the flow of objects around the activity.

Edges represent flow through the activity.

There are two categories of edge:

Control flows - represent the flow of control through the activity.

Object flows - represent the flow of objects through the activity.

Control nodes :

Decision and merge nodes:

A decision node is a control node that has one input edge and two or

more alternate output edges.

Each edge out of the decision is protected by a guard condition.

guard conditions must be mutually exclusive.

The edge can be taken if and only if the guard condition

evaluates to true.

The keyword else specifies the path that is taken if none of the

guard conditions are true.

A merge node accepts one of several alternate flows.

It has two or more input edges and exactly one output edge .

Fork and join nodes:

Forks nodes model concurrent flows of work

Tokens on the single input edge are replicated at the multiple

output edges.

Join nodes synchronize two or more concurrent flows

Joins have two or more incoming edges and exactly one outgoing

edge

A token is offered on the outgoing edge when there are tokens on

all the incoming edges i.e. when the concurrent flows of work

have all finished.

Object nodes:

Object nodes indicate that instances of a particular classifier may be

available.

If no classifier is specified, then the object node can hold any type

of instance.

Multiple tokens can reside in an object node at the same time.

The upper bound defines the maximum number of tokens (infinity

is the default).

Tokens are presented to the single output edge according to an

ordering:

FIFO – first in, first out (the default).

LIFO – last in, first out.

Modeller defined – a selection criterion is specified for the object

node.

Implementation of cyber cafe management system in Activity diagram

Login module

Admin module

Client module

Settings module (session data, personal data etc)

Admin, user have different interface to choose with.

Class Diagram

What are classes?

Every object is an instance of one class - the class describes the "type"

of the object.

Classes allow us to model sets of objects that have the same set of

features - a class acts as a template for objects:

The class determines the structure (set of features) of all objects

of that class.

All objects of a class must have the same set of operations, must

have the same attributes, but may have different attribute values.

Classes and objects:

Objects are instances of classes.

UML defines instantiation as, “The creation of new instances of model

elements”.

Most classes provide special operations called constructors to create

instances of that class. These operations have class-scope i.e. they

belong to the class itself rather than to objects of the class.

Finding classes:

Perform noun/verb analysis on documents:

Nouns are candidate classes , Verbs are candidate

responsibilities.

Perform CRC card analysis

A brainstorming technique using sticky notes.

Useful for brainstorming, Joint Application Development (JAD)

and Rapid Application development (RAD).

With both techniques, beware of spurious classes:

Look for synonyms - different words that mean the same.

Look for homonyms - the same word meaning different things.

Implementation of the Class diagram

Admin module

Client module

Settings module

Session module

Testing

Testing performs a very critical role for quality assurance and for

ensuring the reliability of software. Testing is done to check whether the

proposed system works as required by the client. During testing we also check

whether for the given input the expected output is obtained or not.

It also helps in the rectification of errors in the system. In this project we

perform system testing.

1. Validation and Authentication of clients can be done by checking the

inputted Username and Password is valid or not.

2. Login to the client system can be done by entering a valid username

and password, and by clicking OK button provided on the client login

screen.

3. New prepaid and post-paid users can be added by clicking on the Save

button provided on the server screen.

4. Existing prepaid and post-paid users can be deleted by clicking the

Delete button provided on the server screen.

5. New packages for prepaid users only can be added by clicking the Save

button provided on the server screen.

6. Existing packages can be removed by clicking the Delete button of the

server screen.

7. New items can be added by clicking the Save button provided on the

server screen.

8. Existing items can be removed by clicking the Delete button of the

server screen.

Conclusion

StarUML has many powerful features

and is certainly more than a "simple" diagramming tool. With its support of

MDA (Model Driven Architecture), it is more aimed at people using UML in an

intensive way and with some code generations objectives than for simply

drawing diagrams to document requirements. However, using StarUML just as

a diagramming tool work fine, especially on Windows as the tool is built with

Delphi and might execute faster than the Java-based tools.

Modern world is computer world where the things have to be done promptly

that requires optimal resources and optimal methods. Due to this inevitable

requirement, computerisation of each and every sector in the main stream is

must, so that it can be held itself in the race.

Few eye catching features of our project are its simplicity, accuracy, and i ts

user friendly interface. Our software incorporates all the features and facilities

provided by the Visual Studio software. This project has been developed to

manage the entire working of the Cyber Café. Our software simplifies and

replaces all the manual effort and the paper works done by the owner of the

cyber to a completely electronically environment, be it bill generation or

customer creation and fulfilment of their needs and customer satisfaction.

Hence both the customer and the owner are at their ease. The customer is

serviced at his footsteps wherein he just types in the request and he is just a

click away.

We would like to convey our sincere gratitude and thanks to all, who stood as

our backbone, in designing, formatting and helping us in executing this project

successfully.